Ришитесистему неравенств
7-х ≤ 1-4х
18+2х > -3-5х
-x+4x<=1-7
2x+5x>-3-18
3x<=-6
7x>-21
x<=-2
x>-3
Ответ (-3;-2]
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-x+4x<=1-7
2x+5x>-3-18
3x<=-6
7x>-21
x<=-2
x>-3
Ответ (-3;-2]
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