Okay i am stuck on a question and i need the question is - -5(-2-8m)=10+5m some one

What properties allow transformation to be used as a problem solving tool

Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t – 2654, where t is the number of tickets sold. what does the number 8 tell you?

Solve the equation 1. x-3/4=2 4/52. -1/3x-11= -20 3. -12+5/7x= -19