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受欢迎的初等代数 >

12× 3+25-(8× 9)-17+(47-32)

解答

12 \cdot 3 + 25 - (8 \cdot 9) - 17 + (47 - 32)

解答

- 13

求解步骤

12 \cdot 3 + 25 - (8 \cdot 9) - 17 + (47 - 32)

遵循 PEMDAS 运算顺序

计算括号内的值

(8 \cdot 9) : 72

8 \cdot 9

8 \cdot 9 = 72

= 72

= 12 \cdot 3 + 25 - 72 - 17 + (47 - 32)

计算括号内的值

(47 - 32) : 15

47 - 32

47 - 32 = 15

= 15

= 12 \cdot 3 + 25 - 72 - 17 + 15

乘除（左右）

12 \cdot 3 : 36

12 \cdot 3

12 \cdot 3 = 36

= 36

= 36 + 25 - 72 - 17 + 15

加减（左右）

36 + 25 - 72 - 17 + 15 : - 13

36 + 25 - 72 - 17 + 15

36 + 25 = 61

= 61 - 72 - 17 + 15

61 - 72 = - 11

= - 11 - 17 + 15

- 11 - 17 = - 28

= - 28 + 15

- 28 + 15 = - 13

= - 13

= - 13

流行的例子

8/3-4+2 1/6-9/2

\frac{8}{3} - 4 + 2 \frac{1}{6} - \frac{9}{2}

8+2\div (2+4)× 5

8 + 2 \div (2 + 4) \times 5

(9(11-7)-6)/(5^2-10)

\frac{9 ( 11 - 7 ) - 6}{5 ^{2} - 10}

82-8× (30\div 6)\div 4-63\div 7

82 - 8 \times (30 \div 6) \div 4 - 63 \div 7

\frac{2 ^{2} + 1}{2}