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-5.1=x+(-12.8)
We move all terms to the left:
-5.1-(x+(-12.8))=0
We calculate terms in parentheses: -(x+(-12.8)), so:We get rid of parentheses
x+(-12.8)
We add all the numbers together, and all the variables
x-12.8
Back to the equation:
-(x-12.8)
-x+12.8-5.1=0
We add all the numbers together, and all the variables
-1x+7.7=0
We move all terms containing x to the left, all other terms to the right
-x=-7.7
x=-7.7/-1
x=7+0.7/1
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