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-10.536-1.09a=0.4(a-2.5)
We move all terms to the left:
-10.536-1.09a-(0.4(a-2.5))=0
We calculate terms in parentheses: -(0.4(a-2.5)), so:We get rid of parentheses
0.4(a-2.5)
We multiply parentheses
0.4a-1
Back to the equation:
-(0.4a-1)
-1.09a-0.4a+1-10.536=0
We add all the numbers together, and all the variables
-1.49a-9.536=0
We move all terms containing a to the left, all other terms to the right
-1.49a=9.536
a=9.536/-1.49
a=-6+0.596/1.49
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