Question

2. Efectuați: a) + 5-2; +8-13; - 15+7; -8+10; b) 13-8-10; -7+13-4; -5-12+9; 4-16+3; c) 6+12-5+ 3; 8 +3-16+ 1; -4+3+2-6; -7-9+3+ 5.​

Answer 1

a)

+5 - 2 = 3

+8 - 13 = -5

-15 + 7 = -8

-8 + 10 = 2

b)

13 - 8 - 10 = -5

-7 + 13 - 4 = 2

-5 - 12 + 9 = -8

4 - 16 + 3 = -9

c)

6 + 12 - 5 + 3 = 16

8 + 3 - 16 + 1 = -4

-4 + 3 + 2 - 6 = -5

-7 - 9 + 3 + 5 = -8