# How do you solve the equation 3(x + 7) = 12x – 51?

Dec 4, 2015

color(blue)(x=8

#### Explanation:

$3 \left(x + 7\right) = 12 x - 51$

$3 \cdot \left(x\right) + 3 \cdot 7 = 12 x - 51$

$3 x + 21 = 12 x - 51$

$21 + 51 = 12 x - 3 x$

$72 = 9 x$

$x = \frac{72}{9}$

color(blue)(x=8