Question

I have two equations that I need to solve using the elimination method the system is x = y = 9 and 2x - y = -3

Answer 1

i think u wrote it incorrectly did u mean x+y= 9?? if so

x +y= 9
2x-y=-3
3x = 6
x = 2

or
x +y= 9 (-2) -2x-2y=-18
2x-y=-3 2x- y=-3
-3y=-21
y=7
u can use the elimination process to solve for both or u can solve for one and plug it in any one of the equations to solve for the other