16-10-2014
Mathematics

Answered

-2a - 9 equals 6a plus 15 please answer as fast as you can

Verified Answer :

16-10-2014

Ok ready here we go

-2a-9=6a+15
+2a. +2a

-9=8a+15
-15. -15
-24=8a
-24/8=a

Good luck

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Anonymous Anonymous

16-10-2014

\(-2a-9=6a+15\ \ \ \ \ |add\ 9\ to\ both\ sides\\\\-2a=6a+24\ \ \ \ \ \ |subtract\ 6a\ from\ both\ sides\\\\-8a=24\ \ \ \ \ \ |divide\ both\ sides\ by\ (-8)\\\\\boxed{a=-3}\)

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