Question

Exercițiul 6 urgent.
Dau coroană!

Answer 1

Răspuns:

a.3,b. 137,c.-15, d. - 18, e. - 188,f.14

Explicație pas cu pas:

$- 5 + ( - 2) \times (4 - 8) \\ - 5 + ( - 2 )\times ( - 4) \\ - 5 + ( + 8) \\ 3$

b.

$- 10 + ( - 21) \times ( - 7) \\ - 10 + ( + 147) \\ - 10 + 147 \\ 137$

c.

$- 17 + ( - 24) \div ( - 12) \\ - 17 + ( + 2) \\ - 17 + 2 \\ - 15$

d.

$6 - ( - 3) \times (1 - 9) \\ 6 - ( - 3) \times ( - 8) \\ 6 - ( + 24) \\ 6 - 24 \\ - 18$

e.

$8 - ( - 28) \times (3 - 10) \\ 8 - ( - 28) \times ( - 7) \\ 8 - ( + 196) \\ 8 - 196 \\ - 188$

f.

$13 - ( + 5) \div (7 - 12) \\ 13 - ( + 5) \div ( - 5) \\ 13 - ( - 1) \\ 13 + 1 \\ 14$

ex. 9

a.

Answer 2

a) -5+(-2)•(4-8)= -5+(-2)•(-4)
= -5+8
= 3

b) -10+(-21)•(-7)= -10+147
= 137

c) -17+(-24):(-12)= -17+2
= -15

d) 6-(-3)•(1-9)= 6-(-3)•(-8)
= 6-(+24)
= 6-24
= -18

e) 8-(-28)•(3-10)= 8-(-28)•(-7)
= 8-(+196)
= 8-196
= -188

f) 13-(+5):(7-12)= 13-(+5):(-5)
= 13-(-1)
= 13+1
= 14