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4(4.5-5x)=-2x
We move all terms to the left:
4(4.5-5x)-(-2x)=0
We add all the numbers together, and all the variables
4(-5x+4.5)-(-2x)=0
We multiply parentheses
-20x-(-2x)+18=0
We get rid of parentheses
-20x+2x+18=0
We add all the numbers together, and all the variables
-18x+18=0
We move all terms containing x to the left, all other terms to the right
-18x=-18
x=-18/-18
x=1
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