Question

Simply.

Answer 1

Answer:

Required Answer:-

• First go to first equation

${:}\longrightarrow$$\sf {\dfrac{ab-a}{a}}$

• Take common

${:}\longrightarrow$$\sf {\dfrac {{\bcancel {a }}(b-1)}{{\bcancel {a}}}}$

${:}\longrightarrow$${\underline{\boxed{\bf b-1)}}}$