housecon housecon

12-02-2021
Mathematics

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What does -8mn + 9mn =

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niaritchmon niaritchmon

12-02-2021

Answer:

1mn

Step-by-step explanation:

combine like terms

-8mn+9mn=1mn

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nevinmssena nevinmssena

12-02-2021

Answer:

1mn

Step-by-step explanation:

it would of been - 1 if it was switched around but 9 is more than 8 but 9 is a higher number

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