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-5a+54=(-4a+13.88)
We move all terms to the left:
-5a+54-((-4a+13.88))=0
We calculate terms in parentheses: -((-4a+13.88)), so:We get rid of parentheses
(-4a+13.88)
We get rid of parentheses
-4a+13.88
Back to the equation:
-(-4a+13.88)
-5a+4a-13.88+54=0
We add all the numbers together, and all the variables
-1a+40.12=0
We move all terms containing a to the left, all other terms to the right
-a=-40.12
a=-40.12/-1
a=40+0.12/1
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