add: x-2y-z,x+y+zand-x+y+2z
Answers
Answered by
1
Answer:
(x-2y-z)+(x+y+z)+(-x+y+2z)
x-2y+z+x+y+z-x+y+2z
x+4z
Answered by
3
Answer:
x+2z
Step-by-step explanation:
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