What is the answer to 4/9 = 8/x ?

The answer to 4/9 = 8/x is x=18

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

4/9 = 8/x

\frac{4}{9} = \frac{8}{x}

x = 18

Solution steps

\frac{4}{9} = \frac{8}{x}

Cross multiply

4 x = 72

Divide both sides by

4

x = 18

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = 18

\frac{8}{5 x - 4} = \frac{5}{3 x + 1}

\frac{x !}{( x - 2 ) !} = 6

\frac{10}{x} = \frac{20}{x - 2}

\frac{5 x + 3}{x + 1} = 4.83

\frac{x - 5}{3 x} + 1 = \frac{x + 3}{x}