Вот нам задавали только с 7 по 12
1.547 2. 548 3.574 4. 584 5. 457 6.458 7.475 8.485 9. 754 10.758 11.745 12.785 13.854 14.857 15.845 16. 875 не точно
<span>5x-1/4 - 8x-3/5 > -3/2
</span>5(5х-1) - 4(8х-3)>-30
25х - 5 - 32х + 12 + 30 > 0
-7х > -27
х < 5 целых 2/7
<u>Ответ: 5</u>
1) <span>2,4a×(-5b) = -12ab.
2) </span><span>-a-8b+3b = -а -5b.
3) </span><span>a+(a-10)-(15+a) = a + a - 10 - 15 - a = a - 25.
4) </span><span>-4 (b-4)+7 (b+2) = -4b + 16 + 7b + 14 = 3b + 30.</span>