3m-(7m+12)=2(m-3)solve this and show work

What is the slope of the line shown below?

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

What is the length and width of a 84.5 square foot rug? will mark