(7-1)-3+(2-3)

解答

(7 - 1) - 3 + (2 - 3)

2

求解步骤

(7 - 1) - 3 + (2 - 3)

遵循 PEMDAS 运算顺序

计算括号内的值

(7 - 1) : 6

7 - 1

7 - 1 = 6

= 6

= 6 - 3 + (2 - 3)

计算括号内的值

(2 - 3) : - 1

2 - 3

2 - 3 = - 1

= - 1

= 6 - 3 - 1

加减（左右）

6 - 3 - 1 : 2

6 - 3 - 1

6 - 3 = 3

= 3 - 1

3 - 1 = 2

= 2

= 2

97 - 3 + 5^{3} \div 25 \cdot 2 \cdot 3^{2}

4 5^{2} + 9 0^{2}

(- 8) \div 2 - (- 36) \div (- 6)

21 \div 3 + 7 - 5 + (45 \div 5) + 9

- 5 (6 - 4) - 3 (5)