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 >

0.3(x+2)-0.5(x+2)=-0.2x-0.4

解答

0.3 (x + 2) - 0.5 (x + 2) = - 0.2 x - 0.4

解答

对所有 x 为真

求解步骤

0.3 (x + 2) - 0.5 (x + 2) = - 0.2 x - 0.4

同类项相加:

0.3 (x + 2) - 0.5 (x + 2) = - 0.2 (x + 2)

- 0.2 (x + 2) = - 0.2 x - 0.4

To eliminate decimal points, multiply by 10 for every digit after the decimal pointThere is one digit to the right of the decimal point, therefore multiply by

10

- 0.2 (x + 2) \cdot 10 = - 0.2 x \cdot 10 - 0.4 \cdot 10

整理后得

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

展开

- 2 (x + 2) : - 2 x - 4

- 2 x - 4 = - 2 x - 4

将

4

到右边

- 2 x = - 2 x

将

2 x

para o lado esquerdo

0 = 0

两侧相等

对所有 x 为真

作图

流行的例子

3 x + 5 = 5 x

1 = - 6 + t - 6 + t

2 x - 8 + 3 x - 10 = 17

\frac{w - 10}{6} = 15

-4(2x-3)=7(x-6)

- 4 (2 x - 3) = 7 (x - 6)