Five less than a number is equal to 13 decreased by the number. Find the number.

Question

I don't get how to solve the equation

Answer 1

Five less than a number

x - 5

is equal to

x - 5 = 

13 decreased by the number

13 - x

x - 5 = 13 - x

2x = 18

x = 9

Answer 2

Let n = the number

n - 5 = 13 - n

Add n to both sides and add 5 to both sides.

2n = 18

n = 9