9/7r-2=2/7r - solution

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Solution for 9/7r-2=2/7r equation:

r in (-oo:+oo)

(9/7)*r-2 = (2/7)*r // - (2/7)*r

(9/7)*r-((2/7)*r)-2 = 0

(9/7)*r+(-2/7)*r-2 = 0

r-2 = 0 // + 2

r = 2

r = 2

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