Question

19+ [(3+7)÷2]-4×3= ?

8+ [(6÷2-2) + (3+10÷2) +5]= ?

21 + {7-[3+(8-4)] +9} = ?

[45-(30+5)]×{[(12-1)+9]÷4}= ?


preciso das respostas e dos cálculos ainda hj

Answer 1

Explicação passo-a-passo:

19+ [(3+7)÷2]-4×3

19+ [10÷2]-4×3

19+ 5-4×3

19+ 5-12

24-12

12

8+ [(6÷2-2) + (3+10÷2) +5]

8+ [(3-2) + (3+10÷2) +5]

8+ [1 + (3+10÷2) +5]

8+ [1 + (3+5) +5]

8+ [1 + 8 +5]

8+ [9 +5]

8+14

22

21 + {7-[3+(8-4)] +9}

21 + {7-[3+4] +9}

21 + {7-7 +9}

21 + {0 +9}

21+9

30

[45-(30+5)]×{[(12-1)+9]÷4}

[45-(30+5)]×{[11+9]÷4}

[45-(30+5)]×{20÷4}

[45-(30+5)]×5

[45-35]×5

10×5

50