Question

I think of a number multiply it by 2, subtract 5 and multiply the result by 2

REALLY STUCK ON IT M8s

Answer 1

Call our original number n. Then here's what we did in an equation:
$(n*2-5)*2=2$

We can solve this for n:
$n*2-5=1$
$n*2=6$
$n=3$