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25.8=-4.3q
We move all terms to the left:
25.8-(-4.3q)=0
We get rid of parentheses
4.3q+25.8=0
We move all terms containing q to the left, all other terms to the right
4.3q=-25.8
q=-25.8/4.3
q=-6+3.5527136788005E-15/4.3
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