# Solve? 2x-10y=-20 and -x+4y=28

Apr 25, 2017

$10 y = 2 x + 20$ and $4 y = x + 28$.

Yielding, $x = - 100$ and $y = - 18$

#### Explanation:

Now multiply the second equation (by $- 2$) and add equations:

$\text{ } 10 y = + 2 x + 20$
" "ul(-8y=-2x-56
$\text{ "2y=" "-36" }$ there is only $y$

Therefore $y = - 18$

Now you can calculate$x$ by using either (original) equation
I have chosen the 2nd original equation.

$- x - 72 = 28$

$- x = 100$. In other words,

$x = - 100$

Your answer: $x = - 100$ and $y = - 18$

Apr 25, 2017

I got:
$x = - 100$
$y = - 18$

#### Explanation:

I tryed multiplying the second equation by $2$ and adding to the first: