Question 671485
{{{-1 < -7x-15 <= 20}}}
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{{{-1+15 < -7x <= 20+15}}}
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{{{14 < -7x <= 35}}}
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{{{14/-7 < cross(-7)x/cross(-7) <= 35/-7}}}
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{{{-2 < x <= -5}}}
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