You can put this solution on YOUR website! fifty-three plus four times c is as much as 21
just write what it says
53 + 4c = 21
subtract 53 from both sides
4c = 21 - 53
4c = -32
divide both sides by 4
c =
c = -8
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Confirm this in the original equation, replace c with -8
53 - 4(-8) = 21
53 - 32 = 21
21 = 21; confirms our solution of c=-8