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1-((1/5)*x) = (-4/5)*(x+5) // - (-4/5)*(x+5)
1-((-4/5)*(x+5))-((1/5)*x) = 0
(4/5)*(x+5)+(-1/5)*x+1 = 0
4/5*(x+5)-x/5+1 = 0
(4/5*5*(x+5))/5-x/5+(1*5)/5 = 0
4/5*5*(x+5)-x+1*5 = 0
3*x+5+20 = 0
3*x+25 = 0
(3*x+25)/5 = 0
(3*x+25)/5 = 0 // * 5
3*x+25 = 0
3*x+25 = 0 // - 25
3*x = -25 // : 3
x = -25/3
x = -25/3
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