**Are the Equations ready to be added or subtracted?**

Equations are ready to be added or subtracted if the numbers in front of the X or Y are the same.

E.g. 9y - 2x = 10

4y - 2x = 5

In this example, you can see that both the x's are the same. They have the same signs too, this means you subtract them. When they have different signs (add, and minus) you add them

So lets work this example out.

9y-4y = 5y

10 - 5 = 5

now you divide 5y to find out what y equals, so Y = 5

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