First, we can drop the first set of parentheses but need to distribute the negative sign to the second set of parentheses.
x+5−1(2x−3)=6
x+5−1(2x)+(−1)(−3)=6
x+5−2x+3=6
There are two sets of like terms, the x
and −2x
, and 5
and 3
. So we need to get those terms together.
+
=6
Subtracting 8
from both sides gives us:
−x=−2
And finally, multiplying both sides by −1
gives us:
x=2