What is bigger 7/10 or 4/5

For this case we have the following fractions:

What we should do, is write the fractions so that both have the same denominator to be able to compare them.

We have then for fraction 2:

Then, comparing the fractions, we observe that the numerator of the second fraction is greater. Therefore it is fulfilled that:

And rewriting the fraction in its original form we have:

4/5 is bigger than 7/10