How do you solve the system -11x-10y=17 and 5x-7y=50?

Mar 28, 2017

First multiply the second equation with 11/5 then solve it accordingly $\left(x = - 6.09\right)$.

Explanation:

When you multiply the second equation with 2.2 (which is 11/5) and then combine the equations, you will get $y = - 5$.

Then you can finally solve x either using the first equation or using the second. Let me start with the first equation:

$- 11 x - 10 \cdot - 5 = 17$

$- 11 x - 50 = 17$

$- 11 x = 67$

$x = - 6.09$