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2a+b+c=1................2
4a-2b+c=16..............3
eliminasi c dari pers 1 dan 2:
3a-b+2c = 16
4a+2b+2c= 2 (-)
-a-3b = 14..............4
eliminasi c dari pers 1 dan 3:
3a- b+2c =16
8a-4b+2c =32 (-)
-5a+3b = -16...................5
eliminasi b dari pers 4 dan 5:
-a-3b = 14
-5a+3b = -16 (+)
-6a = -2
a = 1/3; maka b = -43/9
subtitusi a= 1/3 dan b= -43/9 ke pers 1:
3a-b+2c = 16
1 + 43/9 + 2c = 16
2c = 16 - (52/9)
2c = 92/9
c = 46/9
a= 1/3, b= -43/9, c= 46/9