00:01
In this problem, we're going to solve a one -step equation, and we're going to check our solution.
00:07
To do this, we're going to use the subtraction property of equality, which allows us, when we subtract something off one side, we have to subtract it on the other side as well of the equal sign.
00:18
So in this problem, we want to solve for b, and to do that, we have to kind of get rid of this plus 10.
00:24
Now the opposite thing from plus 10 is a minus 10.
00:30
So the opposite operation is a minus 10.
00:33
A plus 10 in the minus 10 really make zero.
00:35
They cancel out.
00:36
So we'll do the same thing to the other side because of the subtraction property of equality...