969. Решите системы неравенств (969, 970): 1) (2x + 7 >1, 3) (4x +9 > -15, 4х 1x – 3 < 1; X - 3 < 1 2 – х = 5; 5) J7х + 9 < 2x – 1, 4 +11x > 9x –14; - - 2) (3y < 21, 14-y> 0; 4) (2x +3> x-1, 1, | 5х – 22 < x + 2; 6) Jх > 0, - x — 5 > 2x +1
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