# How do you solve xy - 3x = 40; x= 5?

Jun 9, 2018

$y = 11$

#### Explanation:

$x y - 3 x = 40$ ----- equation (1)

Given $x = 5$

Substituting the value of $x$ in equation (1):

$5 \times y - 3 \times 5 = 40$

$\implies 5 y - 15 = 40$

$\implies 5 y = 40 + 15 = 55$

$\implies 5 y = 55$

$\implies y = \frac{55}{5}$

$\therefore y = 11$