4x/9-7=21

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Solution for 4x/9-7=21 equation: 


x in (-oo:+oo)

(4*x)/9-7 = 21 // - 21

(4*x)/9-21-7 = 0

4/9*x-28 = 0 // + 28

4/9*x = 28 // : 4/9

x = 28/4/9

x = 63

x = 63

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