What is the answer to x/3 =(x+12)/9 ?

The answer to x/3 =(x+12)/9 is x=6

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

x/3 =(x+12)/9

\frac{x}{3} = \frac{x + 12}{9}

x = 6

Solution steps

\frac{x}{3} = \frac{x + 12}{9}

Apply fraction cross multiply: if

\frac{a}{b} = \frac{c}{d}

then

a \cdot d = b \cdot c

x \cdot 9 = 3 (x + 12)

Expand

3 (x + 12) : 3 x + 36

x \cdot 9 = 3 x + 36

Move

3 x

to the left side

6 x = 36

Divide both sides by

6

x = 6

\frac{2}{3} (y - 6) = - (y + 2) + 1

8 x + 3 = 27

3 x + 6 = 18

x, x + 4 y = 7

6 k + 6 k - 4 = 5 k - 4