# How do you solve x+y=1 and 2x-y=2?

##### 1 Answer

Oct 4, 2015

Add the two equations together to get

#### Explanation:

If we add the two equations together, the left hand side becomes:

#x+y+2x-y = 3x#

and the right hand side becomes:

#1 + 2 = 3#

So

Divide both sides by

Then substituting this value for

#1 + y = 1#

Subtracting

#y = 1 - 1 = 0#