Question

Colin was thinking of a number. Colin adds 9 to the number, then doubles the result to get an answer of 56.2. Form an equation with x from the information.

Answer 1

Step-by-step explanation:

Let the number be X

9 is added to X

= X + 9

the result us doubled

=(x+9) × 2

= 2x + 18

ATQ,

The result is 56.2

=》 2x + 18 = 56.2 or

=》 2x = 56.2 - 18

=》 x = 38.2 / 2