Algebra :\
posted by Presley on .
Elimination using addition and subtraction:
1.
x  y = 1
x + y = 3
2.
x + y = 1
x + y = 11
3.
x + 4y = 11
x  6y = 11
4.
x + 3y = 6
x + 3y = 18
PLEASE HELP!!!!
I NEED HELP ASAP!!!!

Either add or subtract one equation from the other to eliminate x.
For example. ADD the two equations in Problem 1. This results in 2x = 4, which requires that x = 2. Use either equation to get y.
You can certainly do the others yourself.