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-8=4.6(-12-4z)
We move all terms to the left:
-8-(4.6(-12-4z))=0
We add all the numbers together, and all the variables
-(4.6(-4z-12))-8=0
We calculate terms in parentheses: -(4.6(-4z-12)), so:We get rid of parentheses
4.6(-4z-12)
We multiply parentheses
-18.4z-55.2
Back to the equation:
-(-18.4z-55.2)
18.4z+55.2-8=0
We add all the numbers together, and all the variables
18.4z+47.2=0
We move all terms containing z to the left, all other terms to the right
18.4z=-47.2
z=-47.2/18.4
z=-2+4.3333333333333/7.6666666666666
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