3(r/5-5)=2/5r-20

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Solution for 3(r/5-5)=2/5r-20 equation: 


r in (-oo:+oo)

3*(r/5-5) = (2/5)*r-20 // - (2/5)*r-20

3*(r/5-5)-((2/5)*r)+20 = 0

3*(r/5-5)+(-2/5)*r+20 = 0

3*(1/5*r-5)+(-2*r)/5+20 = 0

(3*5*(1/5*r-5))/5+(-2*r)/5+(5*20)/5 = 0

3*5*(1/5*r-5)-2*r+5*20 = 0

r-75+100 = 0

r+25 = 0

(r+25)/5 = 0

(r+25)/5 = 0 // * 5

r+25 = 0

r+25 = 0 // - 25

r = -25

r = -25

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