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(5/2)*x-((4/3)*x)-((9/2)*y)+((9/28)/3)*y = -16/6 // + -16/6
(5/2)*x-((4/3)*x)-((9/2)*y)+((9/28)/3)*y-(-16/6) = 0
(5/2)*x+(-4/3)*x+(-9/2)*y+((9/28)/3)*y+8/3 = 0
7/6*x-123/28*y+8/3 = 0 // - 8/3-123/28*y
7/6*x = -(8/3-123/28*y) // : 7/6
x = (-(8/3-123/28*y))/7/6
x = -6/7*(8/3-123/28*y)
x = -6/7*(8/3-123/28*y)
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