+0

# 8 + y = 8 – y

+2
243
1

8 + y = 8 – y

What is the only value for y that makes this equation true?

Guest May 22, 2017
Sort:

#1
+1827
+1

Let's look at the original equation:

\(8+y=8-y\)

To solve this, we must isolate y. This means that we need to get the equation into y equals form.

\(8+y=8-y\) Subtract 8 on both sides

If you subtract a number on one side of the equation, you must do that on the other, of course. When you subtract 8 on both sides, you are left with:

\(y=-y\)     Add y to both sides

\(y+y=0\)     Combine like terms

\(2y=0\)     Divide by 2 to isolate y

\(y=0\)

If you are ever unsure whether an answer is correct or not, plug the value you got back in the original equation:

\(8+0=8-0\)

\(8=8\)

This statement is true, so y=0 is the correct and the only correct value for y.

TheXSquaredFactor  May 22, 2017

### 25 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details