Просто я тупая как бревно если будет 2 мне будет плохо

1) -16+(-48) = -16-48 = -64

2) -7.5 - 5.8 = - 13.3

3) 3.5 - 6.7 = - 3.2

4) 2.8 -(- 5.4) = 2.8 + 5.4 = 8.2

5) 0.2 -(- 4/7) = 0.2 + 4/7 = 1.4/7 + 4/7 = 5.4/7

6) -72 + 72 + 0 + 23 -(-23) = 23 + 23 = 46

7) -2.3 • 5 = - -11.5

8) -8.1 : (-9) = 0.9

9) -18 : 5 = 3.6

10) -(1/6) : (-5) = 1/6 • 1/5 = 1/30

1) 8a - 7 - a + 5 = 8a - a - 7 + 5 = 7a -2

2) 4(3x - 1) - 3(2 - 5x) = 12x - 4 - 6 + 15x = 12x +15x - 4 - 6 = 27x -10