April 21, 2016
SoE Elimination
We add the two equations together. The goal is by
adding the two, we eliminate one of the variables.
Ex.1
-2x-y=-6
Step 1: Locate the
2x+4y=-12
ready to "drop out"
variable that is
April 21, 2016
Ex. 2
8x+y=-16
3x-y=-5
April 21, 2016
Ex.3
-7x+y=-19
Sometimes we don't
-2x+3y=-19
and we have to
have a "drop out"
make one.
April 21, 2016