please help with this question

Question

The sum of two numbers is -26. One number is 12 less than the other. Find the numbers

Answer 1

x+y =-26

x-y = 12 add the equations to eliminate one variable

2x =-14

x=-14/2

x =-7

y = x-12= -7-12 = 19

the numbers are -7 and -19

they sum to -26 and

their difference is 12