Ineed to know the answer and steps to figure out, mark wants to paint a mural. he has 1 1/3 gallons of yellow paint, 1 1/4 gallons of green paint and 7/8 gallon of blue paint. mark plans to use 3/4 gallons of each paint color. how many gallons of paint will he have left after painting the mural?

Well, Mark has

1 1/3 of yellow paint

1 1/4 of green paint  and

7/8 of blue paint

now, bear in mind, the yellow is a bucket and 1/3 more, the green one is one bucket and 1/4 more and the blue is 7/8 which is almost 8/8, so is almost a bucketfull.

Then he's going to use 3/4 of each, so, we'd have to subtract 3/4 from each, and there'll be some left still in the paint bucket.

How many will he have left altogether?  well, we simply add the leftovers.