2r/7=12

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Solution for 2r/7=12 equation: 


r in (-oo:+oo)

(2*r)/7 = 12 // - 12

(2*r)/7-12 = 0

2/7*r-12 = 0 // + 12

2/7*r = 12 // : 2/7

r = 12/2/7

r = 42

r = 42

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