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7c-4+3c+12=-8c+9
We simplify the equation to the form, which is simple to understand
7c-4+3c+12=-8c+9
We move all terms containing c to the left and all other terms to the right.
+7c+3c+8c=+9+4-12
We simplify left and right side of the equation.
+18c=+1
We divide both sides of the equation by 18 to get c.
c=0.0555555555556
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