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c-3c+8=18
We simplify the equation to the form, which is simple to understand
c-3c+8=18
We move all terms containing c to the left and all other terms to the right.
+1c-3c=+18-8
We simplify left and right side of the equation.
-2c=+10
We divide both sides of the equation by -2 to get c.
c=-5
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