## anonymous one year ago Solve the system algebraically. 2x + y - 10 = 0 x - y - 5 = 0 What is the value of y? -5/3 0 5

1. anonymous

i really need help

2. anonymous

i can help! :)

3. anonymous

great

4. anonymous

y=0 but i will explain why

5. anonymous

$2 x + 1 y = 10$

6. anonymous

$1 x -1 y = 5$

7. anonymous

Eliminate y multiply both by 1

8. anonymous

$2 x + 1 y = 10$

9. anonymous

$1 x + -1 y = 5$

10. anonymous

11. anonymous

$3x=\frac{ 15 }{ 3 }$

12. anonymous

$x = 5$

13. anonymous

plug value of x in $2 x + 1 y = 10$

14. anonymous

$10 + 1 y = 10$

15. anonymous

$1 y = 10 -10$

16. anonymous

$y = 0$