Question

Which value of x makes the open sentence 4 = 5x true?

Answer 1

4= 5x
⇒ 5x= 4
⇒ x= 4/5
⇒ x= 8/10
⇒ x= 0.8

The correct answer is A. 0.8~

Answer 2

Basically, we have to solve for x to find what value makes the open sentence true.

$4 = 5x \\ \\ \frac{4}{5} = x \\ \\ x = \frac{4}{5} \\ \\ Answer: \fbox {4/5} \ or \ \fbox {0.8}$