Question

me ajudem !!!pra amanhã !!!

Answer 1

Explicação passo-a-passo:

1) ( + 9) - ( - 3 ) = - 27

2) ( - 15 ) . ( - 5 ) = +15

3) ( - 12 ) . ( + 4) = - 48

4) ( +8 ) . ( + 25) = + 200

5) ( - 72) ÷ ( - 8) = + 9

6) ( - 105 ) ÷ ( + 7) = - 15

7) ( + 240 ) ÷ ( + 20 ) = + 12

8) ( + 96 ) ÷ ( - 6 ) = - 16

Exercicios 2

( -7 ) . ( 2 ) = - 14 graus