Question

Solve y = x + 8 for x.

Answer 1

y = x +8

So solve for x you need to get x by itself.

To do this in the given equation, subtract 8 from both sides of the equation:

y = x +8

y-8 = x + 8 - 8

Simplify to get:

y - 8 = x

Now rewrite the equation so x is on the left side:

x = y - 8

Answer 2

Answer:

x = y - 8

Step-by-step explanation:

y = x + 8

Isolate the x

Subtract 8 from each side to do this.

y = x + 8

-8      -8

y - 8 = x

So, x is equal to y -8

x  = y - 8