Question

Please helppp. Can you explain this?

Answer 1

We have to find the value of x.

We need to substitute with 3 because they measure the same.

Explanation:

(x - 1)

x - 1 = 3

x - 1 + 1 = 3 + 1

x = 4

(x + 1)

x + 1 = 5

x + 1 - 1 = 5 - 1

x = 4

Both answers are the same which means that they are correct.