-2-3+4-1

解答

- 2 - 3 + 4 - 1

- 2

求解步骤

- 2 - 3 + 4 - 1

遵循 PEMDAS 运算顺序

加减（左右）

- 2 - 3 = - 5

= - 5 + 4 - 1

- 5 + 4 = - 1

= - 1 - 1

- 1 - 1 = - 2

= - 2

数字行

= - 2

(- 6 + 4) - 4 + [3 - (8 + 9 - 2)]

\frac{4}{8} + (5 \times \frac{10}{8}) - 3 (5)

15 \div (1 + 4 \cdot 3)

\frac{5}{9} \div (\frac{2}{7} + \frac{1}{4})

100 \times 5^{2} - 1200 \times 5 + 4000