12=-r/6+3 - solution

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Solution for 12=-r/6+3 equation:

r in (-oo:+oo)

12 = 3-r/6 // - 3-r/6

12-(-r/6)-3 = 0

(1/6)*r-3+12 = 0

1/6*r+9 = 0 // - 9

1/6*r = -9 // : 1/6

r = -9/1/6

r = -54

r = -54

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