What is the answer to 28/21 =(35-x)/x ?

The answer to 28/21 =(35-x)/x is x=15

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

28/21 =(35-x)/x

\frac{28}{21} = \frac{35 - x}{x}

x = 15

Solution steps

\frac{28}{21} = \frac{35 - x}{x}

Cross multiply

28 x = 735 - 21 x

Move

21 x

to the left side

49 x = 735

Divide both sides by

49

x = 15

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = 15

2.5 = \frac{2612.5}{x}

\frac{1}{1 + 19.21 X} = 0.005

x, y = \frac{6}{9 - x}

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

\frac{3}{2160} = \frac{4}{x}