1/2r-7=2

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


r in (-oo:+oo)

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

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

1/2*r-9 = 0 // + 9

1/2*r = 9 // : 1/2

r = 9/1/2

r = 18

r = 18

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