-18=5/2r+12

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Solution for -18=5/2r+12 equation: 


r in (-oo:+oo)

-18 = (5/2)*r+12 // - (5/2)*r+12

-((5/2)*r)-18-12 = 0

(-5/2)*r-18-12 = 0

-5/2*r-30 = 0 // + 30

-5/2*r = 30 // : -5/2

r = 30/(-5/2)

r = -12

r = -12

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