1.4k views
4 votes
Solve the system by elimination

x+3y=5

-x-y=-3

User Laa
by
4.7k points

1 Answer

4 votes

Answer: y = 4

x = -7

Explanation:

1.) x + 3y = 5

-x -y=3

2.) x + 3y = 5

- 3y - 3y

3.) x= 5-3y

4.) -(5-3y)-y=3

5.) -5+3y-y=3

6.) 2y-5=3

7.) 2y-5=3

+5 +5

8.) 2y=8

9.) 2y/2 = 8/2

10.) y= 8/2

11.) y=4

12.) x+3 (4)=5

13.) x+12=5

14.) x+12=5

-12 -12

15.) x= -7

answer.) y= 4

x= -7

User PrivateUser
by
4.9k points