what is 3/4-3/8 ? I really don't under stand

2 answers

Think about having a pizza divided in to 4 pieces.

Then think about a pizza divided into 8 pieces.

We are saying if I have 3/4 of a pizza, someone is going to remove 3/8 of it.

It doesn't make sense unless we are talking about the same sizes.. so we would change 3/4 to 6/8

That means I have 6/8 of the pizza and someone takes 3/8 of it.

That leaves me with 3/8

When you subtract fractions, they have to have the same denominators. You keep the denominators and subtract the numerators.
Thanks