3-2+1× 2

解答

3 - 2 + 1 \cdot 2

3

求解步骤

3 - 2 + 1 \cdot 2

遵循 PEMDAS 运算顺序

乘除（左右）

1 \cdot 2 : 2

1 \cdot 2

1 \cdot 2 = 2

= 2

= 3 - 2 + 2

加减（左右）

3 - 2 + 2 : 3

3 - 2 + 2

3 - 2 = 1

= 1 + 2

1 + 2 = 3

= 3

= 3

\frac{1}{2} + 2 - \frac{13}{6} - \frac{1}{12}

- 1^{2} - (- 1) - 2

- 5 (7 - 2 - 4) + 7 (9 - 6) - 5 (7 - 11)

10 + 16 - 8 - 3 + 15 - 10

300 \div 5 (2 + 4) \div (7 - 1) \times 3