zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的代数 >

n-(5n-2)+(3n+8)=0

解答

n - (5 n - 2) + (3 n + 8) = 0

解答

n = 10

求解步骤

n - (5 n - 2) + (3 n + 8) = 0

去除括号:

(a) = a

n - (5 n - 2) + 3 n + 8 = 0

对同类项分组

n + 3 n - (5 n - 2) + 8 = 0

同类项相加:

n + 3 n = 4 n

4 n - (5 n - 2) + 8 = 0

将

8

到右边

4 n - (5 n - 2) = - 8

展开

4 n - (5 n - 2) : - n + 2

- n + 2 = - 8

将

2

到右边

- n = - 10

两边除以

- 1

n = 10

作图

流行的例子

lo g_{3} (64) = 4

b - 6 = - 14

-2(x+5)=-6x+4(x-2)

- 2 (x + 5) = - 6 x + 4 (x - 2)

g(-10)=5-2(-10)^2

g (- 10) = 5 - 2 (- 10)^{2}

2 (3 x - 8) = 38