Question

1-[7-(4-3×2)×(-1-1)]×5

Answer 1

1 - [7 - (4 - 3×2) × (-1 - 1)]×5

1 - [7 - ( 4 - 6 ) × ( -2 )] × 5

1 - [ 7 + 2 × (-2)] × 5

1 - [ 9 × (-2)] × 5

1 - [ - 18 ] × 5

1 - [-90]

1 + 90 = 91

Answer 2

= 91

Explicação passo-a-passo:1 - [7 - (4 - 3×2) × (-1 - 1)]×5

1 - [7 - ( 4 - 6 ) × ( -2 )] × 5

1 - [ 7 + 2 × (-2)] × 5

1 - [ 9 × (-2)] × 5

1 - [ - 18 ] × 5

1 - [-90]

1 + 90 = 91