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marselah3 marselah3
  • 18-05-2016
  • Mathematics
Answered

combine like terms: x +x - x + y + y + y - z + z - z

Verified Answer :

Anonymous Anonymous
  • 18-05-2016

x  + x - x is   x
y + y + y is   3y
-z + z - z is   -z
x + 3y

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