tolong yaa..sama caranya jugaa..makasii

dimisalkan : 1/x = a
1/y = b
1/z = c
Jawab :
2a + 3y +c = 17
a - 2b + 2c= 4
3a - 2b - 2c = -8

--> eliminasi :
a-2b+2c = 4
3a -2b-2c =-8

4a-4b = -4

--> eliminasi :
4a + 6y + 2c = 17
a -2b +2c = 4

3a + 8b = 13

--> eliminasi akhir :
4a-4b = -4
3a + 8b = 13

8a - 8b = -8
3a + 8b = 13

11a = 5
a = 5/11

4(5/11) -4b = -4
20/11 -4b = -4
-4b = -4 -20/11
-44 b = -44 -20