Answer:
Step-by-step explanation:
Let the number subtracted be k.
3x²-4y²-5z²-6- k = 4x²+5y²-6z²+7
-k = 4x²+5y²-6z²+7 - 3x²+4y²+5z²+6
- k = x²+ 9y² - z² + 13
k = -x² - 9 y + z ² - 13
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Answers & Comments
Answer:
k = -x² - 9 y + z ² + 13
Step-by-step explanation:
Let the number subtracted be k.
3x²-4y²-5z²-6- k = 4x²+5y²-6z²+7
-k = 4x²+5y²-6z²+7 - 3x²+4y²+5z²+6
- k = x²+ 9y² - z² + 13
k = -x² - 9 y + z ² - 13