algebra URGENT!
posted by Laura on .
Solve the system using elimination.
2x – 2y = –8
x + 2y = –1
And this one:
Solve the system using elimination.
3x – y = 28
3x + y = 14
Pleease help me :(

1st:
add them
3x = 9
x = 3
back into #2
3 + 2y = 1
2y = 2
y = 1
2nd:
add them
6x = 42
x = 7
in the 2nd:
21 + y = 14
y = 7