how do I make 19 with a difference of 1

Question

how do I make 19 with a difference of 1

Answer 1

I assume you meant to ask for 2 numbers whose sum is 19 and difference is 1.

n + m = 19

n - m = 1

Add the 2 equations and get

2n = 20

n = 10

Plug this value of n into either equation, solve for m, and get

m = 9

Test the answer.