Question

Solve each system by elimination
-x+5y=-11
x+y=5

Answer 1

if you add them you get

6y=-6
y=-1

substitute back in to get
x-1=5
x=6

so your solution set is (6,-1)

Answer 2

basically in elimination you want to get to get a negative and positive number of x or y in which when you add, you'll cancel one variable out leaving one left for an easily solve

Answer 3

Thanks, Guy. I have a similar one

Answer 4

-4x+y=-4
-2x+4y-16