qqAnswer:
go to a website called tiger algebra and it will help you step by step.
Step-by-step explanation:
In a rhombus, all sides are equal.
So for the quadrilateral MNOP to be a rhombus, the given sides have to be equal. THat is


Adding 3x to both sides and addinf 7 to both sides

Now we need to get rid of 7 and for that we do division, that is


Correct option is the second option .