Question

He is very poor he cannot purchase a car change into simple sentence

Answer 1

He is very poor so he cannot purchase a car.

Answer 2

The right form of the sentence "He is very poor he cannot purchase a car" will be "He is very poor, so the car cannot purchase by him."

This is the right form of the sentence when converted into a simple sentence.

Simple conjunction in the form of "so" is used the sentence without altering its meaning in any form and also without changing the format of the sentence.