gunakan cara eliminasi!!! 3)2u+5v=16 dan u-v=1 4)2m-5n=1 dan 4m-3n=9 5)2p+3q-8=0 dan 3p+2q-17=0

3) 2u + 5v = 16
u - v = 1 |×2
maka
2u + 5v = 16
2u - 2v = 2
------------------(-)
7v = 14
v = 2
2u + 5v = 16
u - v = 1 |×5
maka
2u + 5v = 16
5u - 5v = 5
------------------(-)
- 3u = 11
u = - 11/3
hp = { - 11/3 , 2 }

4) 2m - 5n = 1 |×2
4m - 3n = 9
maka
4m - 10n = 2
4m - 3n = 9
------------------(-)
- 7n = - 7
n = 1
2m - 5n = 1 |×3
4m - 3n = 9 |×5
maka
6m - 15n = 3
20m - 15n = 45
-----------------------(-)
- 14m = - 42
m = 3
hp = { 3 , 1 }