Answer:
Option D.
Step-by-step explanation:
We will solve the given equation and compare it with the solution of Amit's solution.
[tex]\frac{5}{12}=-\frac{x}{420}[/tex]
We will multiply by (-420) on both the sides of the equation.
[tex]\frac{5}{12}(-420)=-\frac{x}{420}(-420)[/tex]
-175 = x
By comparing the solutions we find that the product of [tex]\frac{5}{12}[/tex] and (-420) should have been the value of x, while Amit multiplied the equation by (420).
Therefore, Option D. is the correct option.
