Answer:
x = 10 and y = 8
Step-by-step explanation:
100=10x
100= 10y+20
For x, for first equation, we simply solve for x.
10x = 100 => x=100/10
Therefore, x =10
For y, for second equation, simply solve for y.
100= 10y+20 => 10y = 100-20
10y = 80 => y = 8
