Answer:

Step-by-step explanation:
Given
← factor both numerator and denominator
=
← cancel common factor (1 - 2b) on numerator/denominator
=
← cancel 6 and 3 by 3
= 
It would be 7:9 because if you divide each side by 4 then you can get it in simplest form
Answer:
8
Step-by-step explanation: