en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

3x-9+4x=12

Solution

3 x - 9 + 4 x = 12

Solution

x = 3

Solution steps

3 x - 9 + 4 x = 12

Group like terms

3 x + 4 x - 9 = 12

Add similar elements:

3 x + 4 x = 7 x

7 x - 9 = 12

Move

9

to the right side

7 x = 21

Divide both sides by

7

x = 3

Popular Examples

\frac{2}{3} x - 2 = 5

7 = x + 8

2 (x + 1) = 5 (x + 1)

6(4x+1)+7(3x+1)=90

6 (4 x + 1) + 7 (3 x + 1) = 90

6 v + 5 = - 13 + 4 v

Frequently Asked Questions (FAQ)

What is the answer to 3x-9+4x=12 ?
The answer to 3x-9+4x=12 is x=3
Solve for x: 3x-9+4x=12
The solution is x=3