7r-2/5=3/3 - solution

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Solution for 7r-2/5=3/3 equation:

r in (-oo:+oo)

7*r-(2/5) = 3/3 // - 3/3

7*r-(2/5)-(3/3) = 0

7*r-2/5-1 = 0

7*r-7/5 = 0 // + 7/5

7*r = 7/5 // : 7

r = 7/5/7

r = 1/5

r = 1/5

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