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y-50 = (-51/4)*(x-10) // - (-51/4)*(x-10)
y-((-51/4)*(x-10))-50 = 0
(51/4)*(x-10)+y-50 = 0
51/4*(x-10)+y-50 = 0
51/4*(x-10)+y-50 = 0
51/4*x+y-255/2-50 = 0
51/4*x+y-355/2 = 0
51/4*x+y-355/2 = 0
51/4*x+y-355/2 = 0 // - y-355/2
51/4*x = -(y-355/2) // : 51/4
x = (-(y-355/2))/51/4
x = 4/51*(355/2-y)
x = 4/51*(355/2-y)
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