Question

Help me please with explanation!
(All questions answer)

Answer 1

Explanation:

1.

A

2.

A

3.

A

4.

Let the number=x

double=2x

add 6

2x+6

divide by 2

(2x+6)/2=x+3

subtract 3

x+3-3=x

which is the original number

(2x+6)/2-3=x+3-3=x