52.0k views
1 vote
How do you do x - y = 4 -4 + 2y= -4

2 Answers

3 votes
x-y=4
-4+2y=-4 Start with the second equation by adding 4 to both side of the equation. that will give you 4-4+2y=-4+4. the answer is 2y=0. Now if you divide both sides by 2 you end with 2y/2=0/2, the result is y=0.
Now substitute this answer for y in the first equation of x-y=0. Once you substitute it should look like this, x-0=4, therefore, x=4.
Hope this helps you.
User Jason Axelrod
by
8.6k points
4 votes
The way to do this is:(Look at picture)
How do you do x - y = 4 -4 + 2y= -4-example-1
User Abdullah Faruk
by
8.1k points

No related questions found