How do you solve #2x - 5- 3x + 7= 10#?
1 Answer
Sep 13, 2016
x = -8
Explanation:
You need to rearrange to isolate x:
2x - 5 - 3x + 7 = 10
2x - 5 - 3x = 10 - 7
2x - 5 - 3x = 3
2x - 3x = 3 + 5
2x - 3x = 8
x(2 - 3) = 8
x(-1) = 8
x = 8 / -1
x = -8
To check this put the -8 back in...
2(-8) - 5 - 3(-8) + 7 = 10
Remember BODMAS
-16 - 5 - (-24) + 7 = 10
