Question

When i double my number and add 8 i get my number + 12 WHAT IS MY NUMBER

Answer 1

The first thing we must do for this case is to define variables.

We have then:

x: unknown number

We now write the equation that models the problem:

$2x + 8 = x + 12$

From here, we clear the value of x.

$2x - x = 12 - 8\\x = 4$

The unknown number is equal to 4.

Answer:

The number is:

$x = 4$

Answer 2

$x-my\ number\\\\2x+8=x+12\ \ \ \ \ \ |subtract\ 8\ from\ both\ sides\\\\2x=x+4\ \ \ \ \ \ |subtract\ x\ from\ both\ sides\\\\\boxed{x=4}\\\\Answer:My\ number\ is\ 4.$