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4*((3/2)*y+3/2)+9*y = -4 // + 4
4*((3/2)*y+3/2)+9*y+4 = 0
4*(3/2*y+3/2)+9*y+4 = 0
4*(3/2*y+3/2)+9*y+4 = 0
15*y+4+6 = 0
15*y+10 = 0
15*y+10 = 0
15*y+10 = 0 // - 10
15*y = -10 // : 15
y = -10/15
y = -2/3
y = -2/3
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