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-7.5+5.5(1+3a)=-26.5
We move all terms to the left:
-7.5+5.5(1+3a)-(-26.5)=0
We add all the numbers together, and all the variables
5.5(3a+1)-7.5-(-26.5)=0
We add all the numbers together, and all the variables
5.5(3a+1)+19=0
We multiply parentheses
16.5a+5.5+19=0
We add all the numbers together, and all the variables
16.5a+24.5=0
We move all terms containing a to the left, all other terms to the right
16.5a=-24.5
a=-24.5/16.5
a=-1+1/2.0625
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