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Solution of an Equation

If 9 is the s...

Question

If 9 is the solution of variable x in the equation $\frac{5 x - 7}{2} = y,$ then the value of y is ______.

A

17

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B

19

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C

16

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D

12

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Solution

The correct option is B 19
Givne that, x = 9
Putting the value of x in the equation, we get
$\frac{5 (9) - 7}{2} = y \Rightarrow \frac{45 - 7}{2} = y \Rightarrow \frac{38}{2} = y \Rightarrow y = 19$

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