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y in (-oo:+oo)
145 < (-2/3)*y-51 // - (-2/3)*y-51
51-((-2/3)*y)+145 < 0
(2/3)*y+51+145 < 0
2/3*y+196 < 0 // - 196
2/3*y < -196 // : 2/3
y < -196/2/3
y < -294
y in (-oo:-294)
(-oo:-294)
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