Help please

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

Mandy bought 1/6 pound almonds and 3/4 how many pounds did she buy in all?