SOLUTION: 15-a/3=-9

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Question 74143: 15-a/3=-9
Answer by jim_thompson5910(28503) About Me  (Show Source):
You can put this solution on YOUR website!
15-a%2F3=-9
-a%2F3=-9-15Subtract 15 from both sides
-a=3%28-9-15%29Multiply both sides by 3
-a=-27-45%29Distribute the 3 to each term
-a=-72Subtract like terms
-1%28-a%29=-1%28-72%29Multiply both sides by -1
a=72


Check:
15-a%2F3=-9Plug in a=72
15-72%2F3=-9
15-24=-9
-9=-9Works