To use the elimination method, you can add the two equations in a system of equations to eliminate one of the variables. Add the two equations.
{−9x+y=1010x−y=−9

What is the resulting equation?
Answers :

A 0+2y=10 plus 2 y is equal to 1

B x+0=1x plus 0 is equal to 1

C x+0=19x plus 0 is equal to 19

D 19x+2y=19