how do I solve 8c=5c+21 ?
\(8c=5c+21 \ \ \ |\hbox{subtract 5c from both sides} \\ 3c=21 \ \ \ |\hbox{divide both sides by 3} \\ c=7\)
first subtract 5c from 8c to get "3c=21" and divide each side by 3 so the answer is c=7
