What is the answer to (x-1)/(x+4)= 3/8 ?

The answer to (x-1)/(x+4)= 3/8 is x=4

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

(x-1)/(x+4)= 3/8

\frac{x - 1}{x + 4} = \frac{3}{8}

x = 4

Solution steps

\frac{x - 1}{x + 4} = \frac{3}{8}

Cross multiply

8 x - 8 = 3 x + 12

Move

8

to the right side

8 x = 3 x + 20

Move

3 x

to the left side

5 x = 20

Divide both sides by

5

x = 4

Verify Solutions

Find undefined (singularity) points:

x = - 4

Combine undefined points with solutions:

x = 4

0 = \frac{4}{x}

0.01 = 100 \cdot \frac{x}{( x + 2 )}

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

0 = \frac{2}{x - 2}

\frac{1}{2} = \frac{5}{x}