Question

some number minus 6 is equal to 20 minus 19

Answer 1

So a-6=20-19
So 20-19=1 and something take away 6 has to equal 1 so 
7-6=1 20-19=1
So the number is 7

Answer 2

The some number ix 5 because if u minus 6by 5 you'll get 1 which equal to 20 minus by 19