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5c+4c=13
We simplify the equation to the form, which is simple to understand
5c+4c=13
We move all terms containing c to the left and all other terms to the right.
+5c+4c=+13
We simplify left and right side of the equation.
+9c=+13
We divide both sides of the equation by 9 to get c.
c=1.44444444444
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