Question

The value of x in5 7 9
2
x 

Answer 1

Answer:

Using cross multiplication :

2×9=5x-7

18=5x-7

18+7=5x

25=5x

x=5

Answer 2

$\large\underline{\sf{Solution-}}$

By Cross - multiplying, we get,

$\sf{ \frac{5x - 7}{2} = 9}$

$\sf{\implies5x - 7 = 18}$

Now, We can find x

$\sf{5x - 7 = 18}$

$\sf{\implies5x = 18 + 7}$

$\sf{\implies5x = 25}$

$\sf{\therefore \: x = \frac{25}{5} = 5}$

Hence, Correct option is Option D = 5.