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Y-5 = (-2/5)*(x+5) // - (-2/5)*(x+5)
Y-((-2/5)*(x+5))-5 = 0
(2/5)*(x+5)+Y-5 = 0
2/5*(x+5)+Y-5 = 0
2/5*(x+5)+Y-5 = 0
Y+2/5*x-5+2 = 0
Y+2/5*x-3 = 0
Y+2/5*x-3 = 0
Y+2/5*x-3 = 0 // - Y-3
2/5*x = -(Y-3) // : 2/5
x = (-(Y-3))/2/5
x = 5/2*(3-Y)
x = 5/2*(3-Y)
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