Question

If you subtract 12 from my number and multiply the difference by-3 the result is -54 what is my number

Answer 1

first, make an equation:

$- 54 = - 3x - 12$

then, add twelve to both sides to remove it from the right:

$- 42 = - 3x$

then just divide by (-3) to get the value of x:

$x = 14$