How do you solve 9x + 7i < 3(3x+7u) show you're working out! in advance

Let's solve for i.

9x + 7i <3 (3x+7u)

First add -9x to both sides.

7i + 9x + −9x  < 21u + 9x + −9x

7i < 21u

Then Divide both sides by 7.

7i/7 <  21u/7

The answer is i < 3u

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or