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Solve the following equations and verify...

Solve the following equations and verify the results.
`4(3x+5)-6(2-x)=8(7+x)+22`

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To solve the equation \( 4(3x + 5) - 6(2 - x) = 8(7 + x) + 22 \) step by step, we will follow the order of operations and isolate the variable \( x \). ### Step 1: Expand the brackets First, we will distribute the constants outside the brackets. \[ 4(3x + 5) = 12x + 20 \] \[ -6(2 - x) = -12 + 6x \] \[ 8(7 + x) = 56 + 8x \] Substituting these back into the equation gives: \[ 12x + 20 - 12 + 6x = 56 + 8x + 22 \] ### Step 2: Simplify both sides Now, we will simplify both sides of the equation. On the left side: \[ 12x + 6x + 20 - 12 = 18x + 8 \] On the right side: \[ 56 + 22 = 78 \quad \Rightarrow \quad 78 + 8x = 78 + 8x \] So the equation now looks like: \[ 18x + 8 = 78 + 8x \] ### Step 3: Move all variable terms to one side Next, we will move all terms involving \( x \) to one side and constant terms to the other side. Subtract \( 8x \) from both sides: \[ 18x - 8x + 8 = 78 \] \[ 10x + 8 = 78 \] ### Step 4: Move constant terms to the other side Now, we will isolate \( 10x \) by subtracting 8 from both sides: \[ 10x = 78 - 8 \] \[ 10x = 70 \] ### Step 5: Solve for \( x \) Finally, divide both sides by 10 to find \( x \): \[ x = \frac{70}{10} = 7 \] ### Verification To verify, we will substitute \( x = 7 \) back into the original equation. Left-hand side (LHS): \[ 4(3(7) + 5) - 6(2 - 7) = 4(21 + 5) - 6(-5) = 4(26) + 30 = 104 + 30 = 134 \] Right-hand side (RHS): \[ 8(7 + 7) + 22 = 8(14) + 22 = 112 + 22 = 134 \] Since LHS = RHS, our solution is verified. ### Final Answer The solution to the equation is: \[ x = 7 \]
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ICSE-SIMPLE LINEAR EQUATIONS -Revision Exercise
  1. Solve the following equations and verify the results. 6x+9=3x+57

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  2. Solve the following equations and verify the results. 2/9(x+3)=4x-7

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  3. Solve the following equations and verify the results. 4(3x+5)-6(2-x)...

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  4. Solve the following equations and verify the results. 2/5(4-2x)-3/4(...

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  5. In a class, the number of boys is 3/2 times the number of girls. If th...

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  6. Find four consecutive odd numbers whose sum is 136.

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  7. A number is such that it is as much greater than 84 as it is less than...

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  8. Eight more than 5 times a number is 78. Find the number.

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  9. Seven eighths of a number is greater than half the number by 9. Find t...

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  10. A number consists of two digits that add up to 7. If 27 is added to th...

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  11. A number is doubled to get a second number which is further doubled to...

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  12. A two-digit number is such that the sum of its two digits is 11. If 27...

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  13. Suresh has three boxes of different fruits. Box 1 weighs 2(1)/2 -kg mo...

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  14. Rahul's age is one-fourth of Seema's age. If the difference between th...

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  15. Sudha is four times as old as Rita. After 12 years, Sudha will be twic...

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  16. Alka's age is 5 years more than 4 times the age of Suman. If Alka's ag...

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  17. The length of a rectangular field is twice its breadth. If the perimet...

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  18. A silk scarf is in the shape of an isosceles triangle. The two equal s...

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  19. Two complimentary angles differ by 44^@ Find the two angles

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  20. The difference between two supplementary angles is 72^@ Find the angl...

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