Look at tom's steps to solve a problem. solve this problem in the same way. 42-15=?

Combined megan and kelly worked 60 hours.kelly worked twice as many hours as megan.how many hours did they each worked?

Acompany wants to reduce the dimensions of its logo by one fourth to use on business cards. if the area of the original logo is 4 square inches, what is the area of the logo that will be used on the business cards?

3x + 4y = 5 x- 3y = -7 solve by substitution