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7.50+2.50c=12.50
We simplify the equation to the form, which is simple to understand
7.50+2.50c=12.50
We move all terms containing c to the left and all other terms to the right.
+2.5c=+12.5-7.5
We simplify left and right side of the equation.
+2.5c=+5
We divide both sides of the equation by 2.5 to get c.
c=2
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