SOLUTION: -9a+-12=8+-4

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Question 57745This question is from textbook
: -9a+-12=8+-4 This question is from textbook

Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
-9a+-12=8+-4
-9a-12=8-4
-9a-12=4
-9a-12+12=4+12
-9a=16
-9a%2F-9=16%2F-9
highlight%28a=-16%2F9%29
:
Check by substituting -16/9 in for a and see if both sides =:
-9%28-16%2F9%29%2B-12=8%2B-4
-%28-16%29-12=8-4
16-12=8-4
4=4 We're right!!!
Happy Calculating!!!