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(1/2)*(y+5)+6*x+4*x = 0
1/2*(y+5)+6*x+4*x = 0
1/2*(y+5)+6*x+4*x = 0
6*x+4*x+1/2*y+5/2 = 0
10*x+1/2*y+5/2 = 0
10*x+1/2*y+5/2 = 0
10*x+1/2*y+5/2 = 0 // - 1/2*y+5/2
10*x = -(1/2*y+5/2) // : 10
x = (-(1/2*y+5/2))/10
x = (-(1/2*y+5/2))/10
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