1/2r-3=12-4.5r

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Solution for 1/2r-3=12-4.5r equation: 


r in (-oo:+oo)

(1/2)*r-3 = 12-(4.5*r) // - 12-(4.5*r)

(1/2)*r+4.5*r-12-3 = 0

5*r-15 = 0 // + 15

5*r = 15 // : 5

r = 15/5

r = 3

r = 3

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