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12.3=-0.41x
We move all terms to the left:
12.3-(-0.41x)=0
We get rid of parentheses
0.41x+12.3=0
We move all terms containing x to the left, all other terms to the right
0.41x=-12.3
x=-12.3/0.41
x=-30+1.7763568394003E-15/0.41
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