Question

show work for -10x-21=-171

Answer 1

You need to isolate the x.

-10x - 21 = -171
+ 21 + 21
__________________
-10x = -171 + 21

What's -171 + 21?

And then, do you know what to do after that?

Answer 2

192/10

Answer 3

171-21=150/10=15
x=15

Answer 4

Not quite. Notice the - in front of the 171.
\(\large -171+21\neq 192\)

Answer 5

-171+21=150/10=15
x=15

Answer 6

Oh, right. Nice job