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0.5x-0.2=-0.3x+1.8
We move all terms to the left:
0.5x-0.2-(-0.3x+1.8)=0
We get rid of parentheses
0.5x+0.3x-1.8-0.2=0
We add all the numbers together, and all the variables
0.8x-2=0
We move all terms containing x to the left, all other terms to the right
0.8x=2
x=2/0.8
x=2+0.4/0.8
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