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-9.5+8(1-8.5a)=28.5
We move all terms to the left:
-9.5+8(1-8.5a)-(28.5)=0
We add all the numbers together, and all the variables
8(-8.5a+1)-9.5-(28.5)=0
We add all the numbers together, and all the variables
8(-8.5a+1)-38=0
We multiply parentheses
-64a+8-38=0
We add all the numbers together, and all the variables
-64a-30=0
We move all terms containing a to the left, all other terms to the right
-64a=30
a=30/-64
a=-15/32
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