I don't quite understand the log form you have, but the way to solve logarithms is to convert them to exponents.
log(b) a = c
b^c = a
So....
log(b) x = y
b^y = x
Does that make sense?
Answer:
Step-by-step explanation:
Given
No of People who can speak English is 
No of People who can speak French is 
No of People who can speak Spanish is 
No of People who can speak both English and French 
No of People who can speak both English and Spanish 
No of People who can speak both French and Spanish 
No of people who can speak all languages is 
no of People who can Speak at least one Language is


Probability that Randomly selected can speak at least 1 of these languages
Answer: 18
Step-by-step explanation:
subtract 5 - 7; since that's not possible make the 3 into a 2 and add a 1 in front of the 5; now do 15-7 = 8. 2-1 =1 ----> 18