R/3-2=-7 - solution

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Solution for R/3-2=-7 equation:

R in (-oo:+oo)

R/3-2 = -7 // + 7

R/3-2+7 = 0

1/3*R+5 = 0 // - 5

1/3*R = -5 // : 1/3

R = -5/1/3

R = -15

R = -15

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