The solutions are
and 
Explanation:
Part a: The equation is 
Let us find the value of x.
Multiply the terms within the bracket, we get,

Subtracting both sides by
, we have,

Adding both sides by 3,

Thus, the solution of the equation
is 
Part b: The equation is 
Multiply the terms within the bracket, we get,

Subtracting both sides by 9x, we have,

Subtracting both sides by 17,

Dividing both sides by 3, we have,

Thus, the solution of the equation
is 
Part c: The equation is 
Multiply the terms within the bracket, we get,

Adding the like terms, we have,

Subtracting both sides by 2 and 2x, we get,

Dividing both sides by 5, we have,

Thus, the solution of the equation
is 