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y in (-oo:+oo)
y+(3/2)*y+5/4 = (-5/7)*(y-(3/4)) // - (-5/7)*(y-(3/4))
y-((-5/7)*(y-(3/4)))+(3/2)*y+5/4 = 0
(5/7)*(y-3/4)+y+(3/2)*y+5/4 = 0
5/7*(y-3/4)+y+(3*y)/2+5/4 = 0
(5/7*2*4*(y-3/4))/(2*4)+(2*4*y)/(2*4)+(3*4*y)/(2*4)+(2*5)/(2*4) = 0
5/7*2*4*(y-3/4)+2*4*y+3*4*y+2*5 = 0
96/7*y+12*y-30/7+10 = 0
180/7*y-30/7+10 = 0
180/7*y+40/7 = 0
(180/7*y+40/7)/(2*4) = 0
(180/7*y+40/7)/(2*4) = 0 // * 2*4
180/7*y+40/7 = 0
180/7*y+40/7 = 0 // - 40/7
180/7*y = -40/7 // : 180/7
y = -40/7/180/7
y = -2/9
y = -2/9
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