填空a(x+y-z)+b(x+y-z)-c(x+y-z)=(x+y-z)乘以()

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填空a(x+y-z)+b(x+y-z)-c(x+y-z)=(x+y-z)乘以()

a(x+y-z)+b(x+y-z)-c(x+y-z)=(x+y-z)乘以(a+b-c)

a(x+y-z)+b(x+y-z)-c(x+y-z)=(x+y-z)乘以(a+b-c)

a+b-c

提取公因式(x+y-z)可得该空应填:a+b-c