1/2r+6=-2r

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Solution for 1/2r+6=-2r equation: 


r in (-oo:+oo)

(1/2)*r+6 = -2*r // + -2*r

(1/2)*r-(-2*r)+6 = 0

(1/2)*r+2*r+6 = 0

5/2*r+6 = 0 // - 6

5/2*r = -6 // : 5/2

r = -6/5/2

r = -12/5

r = -12/5

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