Answer: 50%
Step 1 add 18+20 = 38
Step 2 add 10+9= 19
Step 3 divide 19 by 38 = 2
So if would be half which is equal to 50%
I might be wrong but I think zeptosecond comes first then s nanosecond and then a millisecond.
The anwser is 4.4 because you add 9+15 then add 3+2 then divied them both and thats your anwser
x = 4
First you combine like terms:
8 + 4x = 24
Then solve:
4x = 24 - 8
4x = 16
x = 16/4
x = 4
