2r-5(3/5r-7)=-30

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Solution for 2r-5(3/5r-7)=-30 equation: 


r in (-oo:+oo)

2*r-(5*((3/5)*r-7)) = -30 // + 30

2*r-(5*((3/5)*r-7))+30 = 0

2*r-5*((3/5)*r-7)+30 = 0

2*r-5*(3/5*r-7)+30 = 0

2*r-5*(3/5*r-7)+30 = 0

30-r+35 = 0

65-r = 0

65-r = 0

65-r = 0 // - 65

-r = -65 // * -1

r = 65

r = 65

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