# How do you solve 9x + 8y = 15 and 9x + 8y = 30?

Sep 12, 2015

No solution

#### Explanation:

$9 x + 8 y = 15$
$9 x + 8 y = 30$

The above two equations are in the form

$a x + b y = c$
This is a linear equation. Its slope is $m = - \frac{a}{b}$

Apply this formula in the above two equations.

$m = - \frac{9}{8}$

This is the slope of the two lines. The two lines are parallel.
Hence, the system of equations have no solution.