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y-7 = (-3/4)*(x-3) // - (-3/4)*(x-3)
y-((-3/4)*(x-3))-7 = 0
(3/4)*(x-3)+y-7 = 0
3/4*(x-3)+y-7 = 0
3/4*(x-3)+y-7 = 0
3/4*x+y-7-9/4 = 0
3/4*x+y-37/4 = 0
3/4*x+y-37/4 = 0
3/4*x+y-37/4 = 0 // - y-37/4
3/4*x = -(y-37/4) // : 3/4
x = (-(y-37/4))/3/4
x = 4/3*(37/4-y)
x = 4/3*(37/4-y)
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