add: 3mn,-5mn,8mn,-4mn
Answers
Answered by
1
Answer:
Step-by-step explanation:
Add:
3mn+ (-5mn)+ 8mn+ (-4mn)
= 3mn - 5mn + 8mn - 4mn ( ∵ + × - = - )
= (3mn + 8mn ) + ( -5mn - 4mn ) ( ∵ like terms adding )
= 11mn + ( - 9mn)
= 11mn - 9mn ( ∵ + × - = - )
= 2mn is the answer.
Similar questions