4/7r=4

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Solution for 4/7r=4 equation: 


r in (-oo:+oo)

(4/7)*r = 4 // - 4

(4/7)*r-4 = 0

4/7*r-4 = 0 // + 4

4/7*r = 4 // : 4/7

r = 4/4/7

r = 7

r = 7

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