Question

Clare asks Andre to play the following number puzzle:

Pick a number

Add 2

Multiply by 3

Subtract 7

Add your original number

Andre’s final result is 27. Which number did he start with?

Answer 1

Answer:

13 is the answer for your question

x+2×3-7+x=27

2x+6-7=27

2x+1=27

2x=26

x=13

Answer 2

x+2×3-7+x=27

2x+6-7=27

2x+1=27

2x=26

x=13