-7/3c=-21 - solution

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Solution for -7/3c=-21 equation:

c in (-oo:+oo)

(-7/3)*c = -21 // + 21

(-7/3)*c+21 = 0

21-7/3*c = 0 // - 21

-7/3*c = -21 // : -7/3

c = -21/(-7/3)

c = 9

c = 9

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