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Solve: (2x+1)/(7x-2)=(3)/(5)....

Solve: `(2x+1)/(7x-2)=(3)/(5)`.

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To solve the equation \(\frac{2x+1}{7x-2}=\frac{3}{5}\), we will use cross-multiplication. Here are the steps: ### Step-by-Step Solution: **Step 1: Cross-Multiply** We start by cross-multiplying the fractions: \[ 5(2x + 1) = 3(7x - 2) \] **Step 2: Distribute** Now, we distribute the constants on both sides: \[ 5 \cdot 2x + 5 \cdot 1 = 3 \cdot 7x - 3 \cdot 2 \] This simplifies to: \[ 10x + 5 = 21x - 6 \] **Step 3: Move all terms involving \(x\) to one side** Next, we will move all terms involving \(x\) to one side and constant terms to the other side. We can do this by subtracting \(10x\) from both sides: \[ 5 + 6 = 21x - 10x \] This simplifies to: \[ 11 = 11x \] **Step 4: Solve for \(x\)** Now, we can solve for \(x\) by dividing both sides by 11: \[ x = \frac{11}{11} \] This simplifies to: \[ x = 1 \] ### Final Answer: The solution to the equation is: \[ x = 1 \]
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ICSE-LINEAR EQUATIONS-EXERCISE 14B
  1. Solve: (2x+1)/(7x-2)=(3)/(5).

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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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