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5.8-(-3)q=12.16
We move all terms to the left:
5.8-(-3)q-(12.16)=0
We add all the numbers together, and all the variables
-(-3)q-6.36=0
We multiply parentheses
3q-6.36=0
We move all terms containing q to the left, all other terms to the right
3q=6.36
q=6.36/3
q=2+0.36/3
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