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21c+10=9
We simplify the equation to the form, which is simple to understand
21c+10=9
We move all terms containing c to the left and all other terms to the right.
+21c=+9-10
We simplify left and right side of the equation.
+21c=-1
We divide both sides of the equation by 21 to get c.
c=-0.047619047619048
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