Spencer needs 2 gallons of paint to create a mural. He has 3/8 gallon of yellow and 1/4 gallon of blue paint. Drag amounts of paint Spencer can add to the paint he already has to make exactly 2 gallons of paint.

First, let's see how much pait we already have.

3/8 + 1/4 = 3/8 + 2/8 = 5/8

Then subtract it from the amount you need.

2 - 5/8 = 1 3/8

He will need 1 3/8 gallons of paint. Hope this helps!