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Solve the following equations and verify...

Solve the following equations and verify the results.
`4x-[2x-((3x-7))/5]=2x+1`

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To solve the equation \( 4x - \left[ 2x - \frac{(3x - 7)}{5} \right] = 2x + 1 \), we will follow these steps: ### Step 1: Simplify the left-hand side of the equation Start with the equation: \[ 4x - \left[ 2x - \frac{(3x - 7)}{5} \right] = 2x + 1 \] Distributing the negative sign inside the brackets: \[ 4x - 2x + \frac{(3x - 7)}{5} = 2x + 1 \] ### Step 2: Combine like terms Now, combine the terms on the left-hand side: \[ (4x - 2x) + \frac{(3x - 7)}{5} = 2x + 1 \] This simplifies to: \[ 2x + \frac{(3x - 7)}{5} = 2x + 1 \] ### Step 3: Eliminate the fraction To eliminate the fraction, multiply the entire equation by 5: \[ 5 \left( 2x + \frac{(3x - 7)}{5} \right) = 5(2x + 1) \] This gives: \[ 10x + (3x - 7) = 10x + 5 \] ### Step 4: Combine like terms again Now, combine the terms on the left-hand side: \[ 10x + 3x - 7 = 10x + 5 \] This simplifies to: \[ 13x - 7 = 10x + 5 \] ### Step 5: Isolate the variable Now, subtract \(10x\) from both sides: \[ 13x - 10x - 7 = 5 \] This simplifies to: \[ 3x - 7 = 5 \] Next, add 7 to both sides: \[ 3x = 12 \] ### Step 6: Solve for \(x\) Now, divide both sides by 3: \[ x = 4 \] ### Step 7: Verify the solution To verify, substitute \(x = 4\) back into the original equation: LHS: \[ 4(4) - \left[ 2(4) - \frac{(3(4) - 7)}{5} \right] = 16 - \left[ 8 - \frac{(12 - 7)}{5} \right] \] Calculating inside the brackets: \[ = 16 - \left[ 8 - \frac{5}{5} \right] = 16 - (8 - 1) = 16 - 7 = 9 \] RHS: \[ 2(4) + 1 = 8 + 1 = 9 \] Since LHS = RHS = 9, the solution is verified. ### Final Answer: The solution to the equation is: \[ x = 4 \]
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ICSE-SIMPLE LINEAR EQUATIONS -Revision Exercise
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  2. Solve the following equations and verify the results. 1.4x+3.1x=2.3x...

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  3. Solve the following equations and verify the results. 4x-[2x-((3x-7)...

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  4. Solve the following equation and verify the results. ((3x+4))/8-((2x...

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  5. Solve the following equations and verify the results. 6x+9=3x+57

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

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

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

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

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

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

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

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

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

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

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

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