Question

Solve the system of equations using elimination y-x=13 7y+x=11

Answer 1

$\left \{ {{y-x=13} \atop {7y+x=11}} \right. Cancel out the x's to get 8y = 24 Solve for y to get y = 3 Pick an equation such as y - x = 13. Plug in y to get 3 - x = 13. Solve for x to get x = -10.$