Solving Inequalities by Using Addition and Subtraction

Solution sets can be expressed in set-builder notation. 

g + 30 < 68

g + 30 - 30 < 68 - 30

g < 38

The solution set can be written as:
{all numbers less than or equal to 38}

or... set-builder notation:

{ g | g < 38 } which is read as follows:

"the set of all numbers g such that g is less than or equal to 38"