Question

-6m-9n= MsmgsmgsmgsgmsmgsgdhdhgzgJgKgsнввжепыщыпыдныежры

Answer 1

-6m-9n=-3(2m+3n).
Если нужно было вынести общий множетель за скобки.

Answer 2

It seems like you've provided an equation on the left side and a random sequence of characters on the right side. The equation on the left side is: -6m-9n = MsmgsmgsmgsgmsmgsgdhdhgzgJgKgsнввжепыщыпыдныежры

However, the right side of the equation is not a valid mathematical expression or equation. It appears to be a random string of characters without any mathematical meaning. If you have a specific question or need help with a math problem, please provide more information, and I'll be happy to assist you.