1/2r-12=27

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Solution for 1/2r-12=27 equation: 


r in (-oo:+oo)

(1/2)*r-12 = 27 // - 27

(1/2)*r-27-12 = 0

1/2*r-39 = 0 // + 39

1/2*r = 39 // : 1/2

r = 39/1/2

r = 78

r = 78

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