5r+30/20 - solution

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Solution for 5r+30/20 equation:

r in (-oo:+oo)

5*r+30/20 = 0

5*r+3/2 = 0 // - 3/2

5*r = -3/2 // : 5

r = -3/2/5

r = -3/10

r = -3/10

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