Question

-9x+18=-72

Answer 1

We subtract 18 from both sides and get-
-9x+18=-72
-18 -18
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This leaves us with
-9x=-90
Now all we have to do is to isolate x, and that means we got to divide both sides by -9.
-9x/-9=-90/-9.
This leaves us with x=10

Answer 2

Hope it helps :D

Answer 3

can u help with this a+7=20
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-8.4