3(2×+5)

解答

3 (2 \cdot + 5)

15

求解步骤

3 (2 + 5)

遵循 PEMDAS 运算顺序

计算括号内的值

(2 \cdot + 5) : 5

2 + 5

2 = n u ll

= 5

= 3 \cdot 5

乘除（左右）

3 \cdot 5 : 15

3 \cdot 5

3 \cdot 5 = 15

= 15

= 15

8 - [- (3 - 4 + 8) - 7] + 3 - (1 + 5)

\frac{1 ^{2} - 1}{2}

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

(14 + 22) \div (7 - 3)

- 25 + (19) (2) - (6) (- 0)