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=(4C+8)*3.14
We move all terms to the left:
-((4C+8)*3.14)=0
We calculate terms in parentheses: -((4C+8)*3.14), so:We get rid of parentheses
(4C+8)*3.14
We multiply parentheses
12.56C+25.12
Back to the equation:
-(12.56C+25.12)
-12.56C-25.12=0
We move all terms containing C to the left, all other terms to the right
-12.56C=25.12
C=25.12/-12.56
C=-2
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