18.6=1/2r-3.2

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Solution for 18.6=1/2r-3.2 equation: 


r in (-oo:+oo)

18.6 = (1/2)*r-3.2 // - (1/2)*r-3.2

3.2-((1/2)*r)+18.6 = 0

(-1/2)*r+3.2+18.6 = 0

21.8-1/2*r = 0 // - 21.8

-1/2*r = -21.8 // : -1/2

r = -21.8/(-1/2)

r = 43.6

r = 43.6

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