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= -5 - b + c - b + 3a + 2c
= -5 + 3a - b - b + c + 2c
= -5 + 3a - 2b + 3c
Jadi hasilnya adalah -5 + 3a - 2b + 3c
(-5-b+c)-(b-3a-2c)
= -5-b+c-b+3a+2c
= -5+3a-2b+3c