4x-21/-9 - solution

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Solution for 4x-21/-9 equation:

x in (-oo:+oo)

4*x-(21/(-9)) = 0

4*x+7/3 = 0

4*x+7/3 = 0 // - 7/3

4*x = -7/3 // : 4

x = -7/3/4

x = -7/12

x = -7/12

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