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y+3 = (-9/2)*(x+30) // - (-9/2)*(x+30)
y-((-9/2)*(x+30))+3 = 0
(9/2)*(x+30)+y+3 = 0
9/2*(x+30)+y+3 = 0
9/2*(x+30)+y+3 = 0
9/2*x+y+3+135 = 0
9/2*x+y+138 = 0
9/2*x+y+138 = 0
9/2*x+y+138 = 0 // - y+138
9/2*x = -(y+138) // : 9/2
x = (-(y+138))/9/2
x = -2/9*(y+138)
x = -2/9*(y+138)
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