134k views
0 votes
What does -8mn + 9mn =

User Bill Moon
by
4.6k points

2 Answers

8 votes

Answer:

1mn

Explanation:

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

User Rakshi
by
4.7k points
11 votes

Answer:

1mn

Explanation:

combine like terms

-8mn+9mn=1mn

User CornSmith
by
3.8k points