Homework Help: Algebra :\

Posted by Presley on Monday, March 22, 2010 at 11:55pm.

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!!!!

Algebra :\ - drwls, Tuesday, March 23, 2010 at 6:02am
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.

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