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-1.02=0.3x+0.4+0.2x
We move all terms to the left:
-1.02-(0.3x+0.4+0.2x)=0
We add all the numbers together, and all the variables
-(0.5x+0.4)-1.02=0
We get rid of parentheses
-0.5x-0.4-1.02=0
We add all the numbers together, and all the variables
-0.5x-1.42=0
We move all terms containing x to the left, all other terms to the right
-0.5x=1.42
x=1.42/-0.5
x=-2+0.42/0.5
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