Elimination

Solving Systems of Equations

Elimination Style

Open Ended

What do you notice about these two equations?

You may have noticed...

Standard Form

No variables are alone

The coefficients of x and y are almost the same...

Open Ended

What do you notice about these equations?

You may have noticed....

The y values are both alone.

The y values are opposites.

The x coefficients are different.

What would happen if I added them vertically?

• 3x+2x = ?

• -y+y = ?

• 12+13 = ?

Multiple Choice

What happens when I add these vertically?

• 5x=25

• -5x=1

• 5x+2y=1

• 1x=1

Elimination means just that! Eliminate!

When you add equations vertically, you can see that opposites will disappear!