Answer :

protoman97
It equals 4/3 or 1.3333333...
To add fractions, you want the bottom number (the denominator) to be the same.
The 1/3 has a denominator of 3,  so to make 1 have a denominator of 3, you can make 1=3/3
so you have 3/3 +1/3=4/3
olemakpadu
1 + 1/3 =   1 + 0.33333 = 1.33333..

or   1 1/3 . Convert to improper fraction =  3 *1  + 1 = 4 

= 4/3. 

Cheers.