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y in (-oo:+oo)
10/3-((2*y)/7)-(8/3) = (-9*y)/4 // - (-9*y)/4
10/3-((2*y)/7)-((-9*y)/4)-(8/3) = 0
(-2/7)*y+(9/4)*y+10/3-8/3 = 0
55/28*y+2/3 = 0 // - 2/3
55/28*y = -2/3 // : 55/28
y = -2/3/55/28
y = -56/165
y = -56/165
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