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受欢迎的初等代数 >

1/2 (78+314)

解答

\frac{1}{2} (78 + 314)

解答

196

求解步骤

\frac{1}{2} (78 + 314)

遵循 PEMDAS 运算顺序

计算括号内的值

(78 + 314) : 392

78 + 314

78 + 314 = 392

= 392

= \frac{1}{2} \cdot 392

乘除（左右）

\frac{1}{2} \cdot 392 : 196

\frac{1}{2} \cdot 392

将项转换为分式:

392 = \frac{392}{1}

= \frac{1}{2} \cdot \frac{392}{1}

使用分式法则:

\frac{a}{b} \cdot \frac{c}{d} = \frac{a \cdot c}{b \cdot d}

= \frac{1 \cdot 392}{2 \cdot 1}

\frac{1 \cdot 392}{2 \cdot 1} = 196

\frac{1 \cdot 392}{2 \cdot 1}

\frac{1 \cdot 392}{2 \cdot 1} = \frac{392}{2}

\frac{1 \cdot 392}{2 \cdot 1}

数字相乘:

1 \cdot 392 = 392

= \frac{392}{2 \cdot 1}

数字相乘:

2 \cdot 1 = 2

= \frac{392}{2}

= \frac{392}{2}

数字相除:

\frac{392}{2} = 196

= 196

= 196

= 196

流行的例子

36-{[(56+38)-79]-153}

36 - {[(56 + 38) - 79] - 153}

2 \times + 3 \times + 2 + 2

-2 2/3 × (-4) 3/7

- 2 \frac{2}{3} \times (- 4) \frac{3}{7}

4000-40^2-20*40-50

4000 - 4 0^{2} - 20 \cdot 40 - 50

15-8-2× 1+5× (4-12\div 6)

15 - 8 - 2 \times 1 + 5 \times (4 - 12 \div 6)