# How do you solve 7/12 = x/54?

Feb 13, 2016

$x = 31.5$

#### Explanation:

Since the 2 fractions are equal we can cross-multiply to obtain :

$12 x = 7 \times 54$

Now divide by 12 on both sides of the equation to get

$x = \frac{7 \times 54}{12} = 31.5$

Feb 14, 2016

color(green)(x=31.5

#### Explanation:

color(blue)(7/12=x/54

Cross multiply color(orange)(a/b=c/d,ad=bc

$12 x = 7 \left(54\right)$

$12 x = 378$

color(green)(x=378/12=126/4=63/2=31 1/2=31.5