Question

-7x + y = -19

-2x + 3y = -19

solve for x and y using elimination

Answer 1

x = 2, y = -5

Explanation:

`-7x + y = - 19 --> -21x + 3y = -57`

`\left \{ {{-21x+3y=-57} \atop {-2x+3y=-19}} \right.`

subtract

`-19x = -38\\x= 2`

substitute

`-2*2 + 3y = -19\\-4 + 3y = -19\\3y = -15\\y = -5`