What is 2/5 + 3/10? simplify if needed

Firstly, make the denominators for both fractions the same. Convert the smaller denominator into the bigger one if possible. It is easier to change 5 into 10, hence

2/5 is multiplied by 2 in both the denominator and numerator,

2/5 then becomes 4/10.

Simply add the fractions up since the denominators are the same.

4/10 + 3/10 = 7/10

7/10 cannot be simplified further because 7 is not a factor of 10.

Ans: 7/10

2/5+3/10

4/10+3/10

4+3/10

=4/10