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0.3x-(0.8-0.2x)=-0.12
We move all terms to the left:
0.3x-(0.8-0.2x)-(-0.12)=0
We add all the numbers together, and all the variables
0.3x-(-0.2x+0.8)-(-0.12)=0
We add all the numbers together, and all the variables
0.3x-(-0.2x+0.8)+0.12=0
We get rid of parentheses
0.3x+0.2x-0.8+0.12=0
We add all the numbers together, and all the variables
0.5x-0.68=0
We move all terms containing x to the left, all other terms to the right
0.5x=0.68
x=0.68/0.5
x=1+0.18/0.5
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