How do I subtract mixed numbers

For the following right triangle, 12, 16, x. find the side length x

Ten less than 1/2 of a number x is equal to 20

3 (a+9/12) = 3 (a+7/12) + (?)

Simplify the expression insert. A. B. C. D.

A granite installation company schedules its services based on the installation space. It schedules 3 hours for a standard kitchen installation and 1 hour for a standard bathroom installation.

Elisa withdrew $20 at a time from her bank account and withdrew a total of $140. Francis withdrew $45 at a time from his bank account and withdrew a total of $270. Who made the greater number of withdrawals? Justify you answer

A spinner has 8 sections. 2 are grey 6 are blue. The spinner is spun twice what is the probability that the first lands on grey and the second lands on blue.

You deposit 800 dollars into your savings account how much simple interest will 800 dollars earn in 6 months at 7.25%

Expand And Simplify (3x+4) (2x+3)

A rectangle's base is 7cm longer than its height. The rectangle's area is 98cm.