The solution of the equation ax+b = 0 will be

b = 0 - identity equation, the solution is any x number belonging to the set of real numbers (infinitely many solutions), b ≠ 0 - b ≠ 0 - contradictory equation (no solutions).

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b