How do you simplify 57+313?

1 Answer
Jan 12, 2017

See full simplification process below:

Explanation:

To add two fractions they must be over a common denominator, in this case 21. To put the two fractions over common denominators we must multiply each fraction by the appropriate form of 1:

57+313=(33×57)+(77×313)=1521+21721

We can now add the numerators over the common denominator:

1521+21721=15+21721=23221