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(2/3)*x+(4/5)*y = -52 // + 52
(2/3)*x+(4/5)*y+52 = 0
2/3*x+4/5*y+52 = 0 // - 4/5*y+52
2/3*x = -(4/5*y+52) // : 2/3
x = (-(4/5*y+52))/2/3
x = -3/2*(4/5*y+52)
x = -3/2*(4/5*y+52)
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