Can anyone me with this 7/4+5/4=12/4

You purchased 8 pounds 10 ounces of candy from a candy shop. you want to split it equally among 3 classrooms at a local school.

Rai compares two cable plans from different companies. which equation gives the correct value of mm, the number of months for which plans a and b cost the same?

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.