Question 111201
x+y=31
y=2x-2 now substitute (2x-2) for y in the othere equation & solve for x.
x+(2x-2)=31
x+2x=31+2
3x=33
x=33/3
x=11 answer for the smaller number.
11+y=31
y=31-11
y=20 answer.
proof
11+20=31
31=31