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0.4x+6.2=0.4(2x-18.4)
We move all terms to the left:
0.4x+6.2-(0.4(2x-18.4))=0
We calculate terms in parentheses: -(0.4(2x-18.4)), so:We get rid of parentheses
0.4(2x-18.4)
We multiply parentheses
0.8x-7.36
Back to the equation:
-(0.8x-7.36)
0.4x-0.8x+7.36+6.2=0
We add all the numbers together, and all the variables
-0.4x+13.56=0
We move all terms containing x to the left, all other terms to the right
-0.4x=-13.56
x=-13.56/-0.4
x=33+0.36/0.4
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