How to solve a math problem

What is a over b minus c over b equal

Which of the fractions below is equivalent 3/5 A. 6/8 B. 6/10 C. 9/12 D. 8/15

What is 2/3 divided by 2/9

A cookie company uses 1/6 of a foot of cookie dough to make a cookie. How many feet of cookie dough is needed to make 15 cookies?

You're working at a marketing firm. The firm recently introduced a new smartphone to the US market and they are interested if more than half of consumers in the US are familiar with the new product.

Ignoring any selection rules, how many lines will it have in its emission spectrum?

Six friends share 4 sandwiches equally. What fraction of a sandwich does each friend get? Fraction of a sandwich does each friend get?

Apartment A has a security deposit of $1000 and cost $1200 each month. Apartment B has a $1500 security deposit and cost $1175 each month. How many months will it take for the costs to be the same?

What is 2 + 2 + 8 + 10 + 22

What is 2:39 I'm really confused on this?