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-8a+4b-2c+d= -12
kurangkan
35a + 5b + 5c = 25 ...(1)
.
-8a+4b-2c+d= -12
-a+b-c+d= 1
kurangkan
-7a + 3b - c = -13....(2)
..
27a+9b+3c+d= 13
-a+b-c+d= 1
kurangkan
28a + 8b + 2c = 12...(3)
..
persamaan (1,2,3) eliminasi
35a + 5b + 5c = 25 .
-7a + 3b - c = -13.
28a + 8b + 2c = 12
...
dstnya
-8a+4b-2c+d= -12
kurangkan
35a + 5b + 5c = 25 ...(1)
.
-8a+4b-2c+d= -12
-a+b-c+d= 1
kurangkan
-7a + 3b - c = -13....(2)
..
27a+9b+3c+d= 13
-a+b-c+d= 1
kurangkan
28a + 8b + 2c = 12...(3)
..
persamaan (1,2,3) eliminasi
35a + 5b + 5c = 25 .
-7a + 3b - c = -13.
28a + 8b + 2c = 12