r/2+2=5

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Solution for r/2+2=5 equation: 


r in (-oo:+oo)

r/2+2 = 5 // - 5

r/2-5+2 = 0

1/2*r-3 = 0 // + 3

1/2*r = 3 // : 1/2

r = 3/1/2

r = 6

r = 6

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