C/7=21

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Solution for C/7=21 equation: 


C in (-oo:+oo)

C/7 = 21 // - 21

C/7-21 = 0

1/7*C-21 = 0 // + 21

1/7*C = 21 // : 1/7

C = 21/1/7

C = 147

C = 147

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