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-10.80=2.8a
We move all terms to the left:
-10.80-(2.8a)=0
We add all the numbers together, and all the variables
-(+2.8a)-10.80=0
We add all the numbers together, and all the variables
-(+2.8a)-10.8=0
We get rid of parentheses
-2.8a-10.8=0
We move all terms containing a to the left, all other terms to the right
-2.8a=10.8
a=10.8/-2.8
a=-3+1/1.16666666667
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