c/7=3/21

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Solution for c/7=3/21 equation: 


c in (-oo:+oo)

c/7 = 3/21 // - 3/21

c/7-(3/21) = 0

c/7-1/7 = 0

1/7*c-1/7 = 0 // + 1/7

1/7*c = 1/7 // : 1/7

c = 1/7/1/7

c = 1

c = 1

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