# How do you simplify #30/80 + 40/100#?

##### 1 Answer

#### Answer:

Find a common denominator and divide out common factors.

#### Explanation:

The common factors of

The common factors of

8 and 10 have a common multiply of 40

The unique factors are

( the factor of 2 in ten is a repeat of the 3 factors of 2 in 8)

Now change both fractions to a faction with a denominator of 40

These fractions can be added giving

there are no common factors between 31 and 40 so