What is (34/8-16/9)-14/9

Beth makes batches of bluberry muffins and banna muffins. each batchis 6 muffins. she makes 2.5 batches of bluberry muffins. how many batches of bananna muffins should beth make if she wants to have a total of 60 muffins?

What term makes it inconsistent y=2x - 4

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.