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0.2x-0.09=-0.03x
We move all terms to the left:
0.2x-0.09-(-0.03x)=0
We get rid of parentheses
0.2x+0.03x-0.09=0
We add all the numbers together, and all the variables
0.23x-0.09=0
We move all terms containing x to the left, all other terms to the right
0.23x=0.09
x=0.09/0.23
x=0.09/0.23
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