When 4yz+9zx−4y and −3xz+5x−2xy are added, we get 4yz+6xz−2xy−4y+5x.
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False
(4yz+9zx−4y) + (−2xy−3xz+5x)
= 4yz+9zx−3xz−4y−2xy+5x
= 4yz+6xz−2xy−4y+5x
When 7xy + 5yz - 3zx, 4yz + 9zx - 4y and - 3xz + 5x - 2xy are added, we get
Solve the following:Add 7xy+5yz−3zx,4yz+9zx−4y,−3xz+5x−2y