Ответ:

1) l8l + l-4l = 12

l48l : l-8l = 6

l-5l - l-3l = 2

l75l : l-3l = 25

l-15l - l12l = 3

l-52l * l-2l = 104

l-4l * l25l = 100

l27l + l44l = 71

2) 15 ≤ 28

-12 ≤ 20

-3 ≥ -6

13.7 ≥ 8.6

0 ≥ -15

-2.1 ≥ -2.2

12.3 ≥ 12.29

-15 ≤ 0

-7 ≥ -12

80 ≥ 79

-3.4 ≤ 1.2

125 ≥ 0

5.7 ≥ -6