I will give you a example.
If you find a recipe with 1/3 tablespoon salt, it would be 1/3+1/3=2/3
Never change the bottom number (Denominator) unless the two denominators are diffrent.
Answer:
The range is 40.
Step-by-step explanation:
Range is just the largest number minus the smallest.
70 - 30 = 40
1/5
I hope that this helps you.