Question

When you subtract 22 from a number and the result is doubled, the answer is 6 more than the original number. What is the number?

Answer 1

You have to write two equation:
'substract 22 from a number'
$X-22=Y$
and:
'the result is doubled, the answer is 6 more than the original number'
$2*Y=X+6$

then you change 'Y' in 2nd equation for left side of 1st equation:
$2*(X-22)=X+6$
count it and you get:
$2X-44=X+6$
This means that X=50
The original number is 50.