Question

if you subtract 12 from my number and multiply the difference by -6 the result is -90 what is my number

Answer 1

n must be 27

Explanation:

Let this number be x. Then -6(n - 12) = -90.

Dividing both sides by -6 yields n - 12 = 15.

Add 12 to both sides.

Then n must be 27.

Check: subtract 12 from 27; this yields 15. Now multiply this result by -6. The result is -90, which was expected.