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Solve : (x)/(7) +x=16...

Solve : `(x)/(7) +x=16`

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To solve the equation \(\frac{x}{7} + x = 16\), we will follow these steps: ### Step 1: Write the equation We start with the equation: \[ \frac{x}{7} + x = 16 \] ### Step 2: Find a common denominator The common denominator for the terms on the left side is 7. We can rewrite \(x\) as \(\frac{7x}{7}\) to have a common denominator: \[ \frac{x}{7} + \frac{7x}{7} = 16 \] ### Step 3: Combine the fractions Now, we can combine the fractions on the left side: \[ \frac{x + 7x}{7} = 16 \] This simplifies to: \[ \frac{8x}{7} = 16 \] ### Step 4: Cross-multiply To eliminate the fraction, we can cross-multiply: \[ 8x = 16 \times 7 \] ### Step 5: Calculate the right side Now we calculate \(16 \times 7\): \[ 16 \times 7 = 112 \] So we have: \[ 8x = 112 \] ### Step 6: Solve for \(x\) Now, divide both sides by 8 to isolate \(x\): \[ x = \frac{112}{8} \] Calculating this gives: \[ x = 14 \] ### Final Answer Thus, the solution to the equation is: \[ x = 14 \] ---
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ICSE-LINEAR EQUATIONS-EXERCISE 14B
  1. Solve : (x)/(7) +x=16

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  2. Three-sevenths of a number is 12. Find the number.

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  3. A number increased by 9 gives 43. Find the number.

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  4. A number diminished by 11 gives 57. Find the number.

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  5. Thrice a number increased by 6 equals 39. Find the number.

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  6. Three-fourths of a number exceeds its one-third by 15. Find the number...

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  7. A number when divided by 4 is reduced by 21. Find the number.

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  8. A number is as much greater than 36 as is less than 86. Find the numbe...

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  9. A number exceeds its four-sevenths by 18. Find the number.

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  10. A number exceeds 20% of itself by 40. Find the number.

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  11. If 10 be added to four times a certain number, the result is 5 less th...

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  12. One fourth of a number is increased by 7 and the result is multiplied ...

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  13. The sum of two consecutive odd numbers is 56. Find the numbers.

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  14. The sum of three consecutive even numbers is 48. Find the numbers.

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  15. One of the two numbers exceeds the other by 9. Four times the smaller ...

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  16. In a class of 40 pupils, the number of girls is three-fifths of the nu...

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  17. The length of a rectangular park is three times its breadth. If the pe...

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  18. Two equal sides of a triangle are each 5 metres less than twice the th...

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  19. Two supplementary angles differ by 44^(@). Find the angles.

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  20. The total cost of 3 tables and 2 chairs is Rs. 8745. If a table costs ...

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  21. The denominator of a fraction is 3 more than the numerator. If 2 is ad...

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