(7+6)× (4-3)

解答

(7 + 6) \cdot (4 - 3)

13

求解步骤

(7 + 6) (4 - 3)

遵循 PEMDAS 运算顺序

计算括号内的值

(7 + 6) : 13

7 + 6

7 + 6 = 13

= 13

= 13 (4 - 3)

计算括号内的值

(4 - 3) : 1

4 - 3

4 - 3 = 1

= 1

= 13 \cdot 1

乘除（左右）

13 \cdot 1 : 13

13 \cdot 1

13 \cdot 1 = 13

= 13

= 13

2^{9} + 2^{8} + 2^{7} + 2^{6}

72 \div (- 18) \times 4 - (3 - 12) \div (- 9)

\frac{2}{3} - (\frac{1}{2} + \frac{3}{4})

4^{2} - 5 \times 3 + 12 \div 2 + 1

5 (4 - 5) + 3 (5 - 1) - 2 (1 + 2) (2) + 2 (3) (4)