Question

3. Resolvendo as seguintes expressões.
1) 23 + (47 - 17) - 20 x 2


III) (70 - 50): 5 + (4 x 6 )


II) 40 : ( 5x 2) + 4:2


IV) (25 - 15 ) + ( 6:3)

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Answer 1

Resposta:

1) 3

2) 28

3) 6

4) 12

Explicação passo-a-passo:

1) 23 + (47 - 17) - 20 x 2

23 + 30 - 20 x 2

23 + 30 - 40

3

2) (70 - 50): 5 + (4 x 6 )

20 : 5 + 24

4 + 24

28

3) 40 : ( 5x 2) + 4:2

40 : 10 + 4 : 2

4 + 2

6

4) (25 - 15 ) + ( 6:3)

10 + 2

12

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