What is 1/2 plus 9/10

1.4. 1/2=.5 9/10=.9 add them together and u get 1.4

Find the common denominator first--> 10

1/2 = ?/10?=5

so 5/10 + 9/10 (Now you just add the numerators and keep the common denominator the same)

14/10 and if you want to simplify it, simply divide both the top and bottom by 2

answer = 7/5