What is the answer to 3/x = 12/15 ?

The answer to 3/x = 12/15 is x= 15/4

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

3/x = 12/15

\frac{3}{x} = \frac{12}{15}

x = \frac{15}{4}

Decimal Notation

x = 3.75

Solution steps

\frac{3}{x} = \frac{12}{15}

Cross multiply

45 = x \cdot 12

Switch sides

x \cdot 12 = 45

Divide both sides by

12

x = \frac{15}{4}

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = \frac{15}{4}

u, y = \frac{1}{u} + x

n, A = P (b + \frac{x}{n})

3 x^{- 2} - 17 x^{- 1} - 6 = 0

x, y^{2} = \frac{1}{x}

f, w = \frac{r}{f}