What is the reciprocal of 7/9

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u