化简-1+3/(-1)

解答

化简

- 1 + \frac{3}{- 1}

- 4

求解步骤

- 1 + \frac{3}{- 1}

使用分式法则:

\frac{a}{- 1} = - a

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

= - 1 - 3

数字相减:

- 1 - 3 = - 4

= - 4

2 (8 m + 3) - 15 m - 4 = 9 m + 6 - 2 (m - 1) - 7 m

1 = \frac{3 x}{4} + \frac{7}{4}

f a c t or 3 x^{2} - 25 x + 42

7 x = 2 x^{2}

f a c t or x^{3} - 2 x - 56