R/2-7=3

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Solution for R/2-7=3 equation: 


R in (-oo:+oo)

R/2-7 = 3 // - 3

R/2-7-3 = 0

1/2*R-10 = 0 // + 10

1/2*R = 10 // : 1/2

R = 10/1/2

R = 20

R = 20

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