Answer!! Whoever has the best answer I'll give brainliest!!

There are 2 ways to do this. I'm going to do it the way that I think is most simple.
You have to find their LCM which is 40. Now times 40 to 1/4 v and 7/10
The equation then becomes 10+40v=28
You simplify it: 40v=18
v= 9/20
Answer:
v = 9/20
Step-by-step explanation:
1/4 becomes 10/40
7/10 becomes 28/40
28/40 - 10/40 = 18/40
simplify 18/40 divided by 2
v = 9/20