Hey guys, our adviser showed us an example on how to solve the problem that is given in our module. Unfortunately, there's a part of the given example that I can't recall. So, can you explain how to get the answer? (picture above)

Given :
To Do :-
Solution :-
Given that ,
Distributive property of Multiplication over addition ,
So that ,
Step-by-step explanation:
As it says, multiply 45x to all the terms. This is required to get rid of fractions.
See the steps below: