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0.1(x+55)=-2(2-x)
We move all terms to the left:
0.1(x+55)-(-2(2-x))=0
We add all the numbers together, and all the variables
0.1(x+55)-(-2(-1x+2))=0
We multiply parentheses
0.1x-(-2(-1x+2))+5.5=0
We calculate terms in parentheses: -(-2(-1x+2)), so:We get rid of parentheses
-2(-1x+2)
We multiply parentheses
2x-4
Back to the equation:
-(2x-4)
0.1x-2x+4+5.5=0
We add all the numbers together, and all the variables
-1.9x+9.5=0
We move all terms containing x to the left, all other terms to the right
-1.9x=-9.5
x=-9.5/-1.9
x=+5
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