4/7r=1/2

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Solution for 4/7r=1/2 equation: 


r in (-oo:+oo)

(4/7)*r = 1/2 // - 1/2

(4/7)*r-(1/2) = 0

(4/7)*r-1/2 = 0

4/7*r-1/2 = 0 // + 1/2

4/7*r = 1/2 // : 4/7

r = 1/2/4/7

r = 7/8

r = 7/8

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