展开 1/2 (6a+8)

解答

展开

\frac{1}{2} (6 a + 8)

3 a + 4

求解步骤

\frac{1}{2} (6 a + 8)

使用分配律:

a (b + c) = ab + a c

\frac{1}{2} (6 a + 8) = \frac{1}{2} \cdot 6 a + \frac{1}{2} \cdot 8

= \frac{1}{2} \cdot 6 a + \frac{1}{2} \cdot 8

化简

\frac{1}{2} \cdot 6 a + \frac{1}{2} \cdot 8 : 3 a + 4

= 3 a + 4

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