Question

13-(+5):(7-12)=?

-8:(-4)-5×(3-7)=?

(-28):(-9+2)+(-2)×3=?

[3-(-5)]×(-6)-(-1)la puterea a3-a =?

(-2) la puterea a3a -2 la a 2 -(-6)-(-1) la a 3a =?

Answer 1

Răspuns:

A)

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

B)

$( - 28) \div ( - 9 + 2) + ( - 2) \times 3 = \\ ( - 28) \div ( - 7) - 6 = \\ 4 - 6 \\ 3$

C)

$- 8 \div ( - 4) - 5 \times (3 - 7) \\ 2 - 5 \times ( - 4) = \\ 2 + 20 = \\ = =22$