Question

What is the value of x in the equation x – y = 30, when y = 15?

A.4
B.8
C.80
D. 200

Answer 1

The answer is equal to a

Answer 2

The value of x is:

`x=45`

Explanation:

We are given a linear equation in terms of variable x and y as follows:

`x-y=30----------(1)`

Now, we are asked to find the value of x for the given value of y.

i.e. we have to evaluate the given equation for the given value of y.

Now we are given: y= 15

so by putting this value in equation (1) we have:

`x-15=30`

On adding 15 on both the sides of the equation we have:

`x=30+15\\\\x=45`