7(3 + 4y) - 15y = 73
( Multi-step equations)
show work please and thank you

The distance around the lake is 2 kilometers. ifelena wants to run 14 kilometers this week, howmany laps must she run around the lake

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.