21-4x/7

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Solution for 21-4x/7 equation: 


x in (-oo:+oo)

21-((4*x)/7) = 0

(-4/7)*x+21 = 0

21-4/7*x = 0 // - 21

-4/7*x = -21 // : -4/7

x = -21/(-4/7)

x = 147/4

x = 147/4

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