Answer:
(a)

(b)

Explanation:
Given

Solving (a): Multiply equation by 5.
Multiply both sides by 5

Open bracket


(b) Solve for y in
and


Subtract 10x from both sides

Divide both sides by 35


Factorize the numerator:

Express 35 as 7 * 5



When
is solved, the solution will be:
