Express the verbal expression as an algebraic expression. Four less than eight times the sum of a number and seven.

111 thirty dollars is to be divided among three girls and two boys so that each of the girls receives twice as much as each of the boys. how much does each receive?

How do you use the elimination method for this question? explain, because i really want to understand!

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.