SOLUTION: what is-7z+8+9z=

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Question 676070: what is-7z+8+9z=
Found 2 solutions by Lightener, MathLover1:
Answer by Lightener(3) About Me  (Show Source):
You can put this solution on YOUR website!
You must give an equal number.

Answer by MathLover1(20850) About Me  (Show Source):