4/9r=1

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Solution for 4/9r=1 equation: 


r in (-oo:+oo)

(4/9)*r = 1 // - 1

(4/9)*r-1 = 0

4/9*r-1 = 0 // + 1

4/9*r = 1 // : 4/9

r = 1/4/9

r = 9/4

r = 9/4

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