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How do I solve 8c=5c+21 ?
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How do I solve 8c=5c+21 ?

User Brian Childress
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first subtract 5c from 8c to get "3c=21" and divide each side by 3 so the answer is c=7
User Farouk Osama
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8c=5c+21 \ \ \ |\hbox{subtract 5c from both sides} \\ 3c=21 \ \ \ |\hbox{divide both sides by 3} \\ c=7
User KoPytok
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