R/2-3=-7

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


R in (-oo:+oo)

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

R/2-3+7 = 0

1/2*R+4 = 0 // - 4

1/2*R = -4 // : 1/2

R = -4/1/2

R = -8

R = -8

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