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30=1.5(-4+8x)
We move all terms to the left:
30-(1.5(-4+8x))=0
We add all the numbers together, and all the variables
-(1.5(8x-4))+30=0
We calculate terms in parentheses: -(1.5(8x-4)), so:We get rid of parentheses
1.5(8x-4)
We multiply parentheses
12x-6
Back to the equation:
-(12x-6)
-12x+6+30=0
We add all the numbers together, and all the variables
-12x+36=0
We move all terms containing x to the left, all other terms to the right
-12x=-36
x=-36/-12
x=+3
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