Question 344820
10x+y-(10y+x)=18
x+y=8
x=8-y
10(8-y)+y-(10y+(8-y)=18
80-10y+y-10y-8+y=18
-18y=18-80+8
-18y=-54
y=3 ans.
x=8-3=5 ans.
Proof:
10*5+3-(10*3+5)=18
50+3-30-5=18
53-35=18
18=18