Question

What is the value of x
in the equation
x-2y=30, when y=15

Answer 1

60

Explanation:

x-2(15) =30 So, 15 times 2 is 30 30 plus 30 equals 60

Answer 2

The value of x is 60.

Explanation:

You substitute 15 for y since that's the value of y:

x-2(15)=30

Solve for x:

x-2(15)=30

x-30=30

+30 +30

x=60