Answer:
5/10 + 3/10 = 8/10
5/10 - 3/10 = 2/10
Step-by-step explanation:
1/2 = 5/10
Answer: 1/2+3/10
= 5/10+3/10=8/10=0.8=80%
Answer:1/2-3/10
=5/10-3/10=2/10=0.2=20%
