Question 51840
1st: u-v=0
2nd: 7u-v=0

Subtract 1st from 2nd to get:
3rd: 6u=0
u=0
Sustitute into 1st to solve for "v", as follows:
0-v=0
v=0
Solution:
u=0 and v=0
Cheers,
Stan H.