3-1/2r+12

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Solution for 3-1/2r+12 equation: 


r in (-oo:+oo)

3-((1/2)*r)+12 = 0

(-1/2)*r+3+12 = 0

15-1/2*r = 0 // - 15

-1/2*r = -15 // : -1/2

r = -15/(-1/2)

r = 30

r = 30

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