9 8 9 x 4x 5. -2x-7=-4x. 3x-4/7-4x-1/4>2. (1/4)^X -9*(1/2)^X>-8. 4x-3/x+1-6x-5/2x+1. 1 1/35 / 4/5 - 1,8 Х 3 1/3. Х/2-X-3/4-X+1/8<1/2. 5 5 3 :4 3 2 =X:2 15 1. Х/5+Х/15 = 1/3. 8x 3 3x 8 + 9 решение. Х-1 9/17 +2 14/17 5 5/17. (8 + X) 9 1/9 = 12 2/3 X ответ