To subtract fractions with x’s, you must first make the denominators equal

Ithink i know it but i want to be sure so can you me out ?

What is the scale factor of axyz to auvw?

Henrik is shopping at a store. the store is having a sale on all items. henrik also has a coupon for an additional amount off the sale price. the expression 0.7p – 15 represents the final price, in dollars, of items with a regular price of p dollars. complete the table by filling in the value of the coupon and the percent discount of the store's sale.