Answer: x=54 and y=36
Step-by-step explanation:
let the two numbers x and y
as the difference of two numbers is 18
x-y=18 eq(1)
sum of two numbers is 90
x+y=90 eq(2)
add eq(1) and eq (2)
x-y+x+y=18+90
2x=108
x=108/2
x=54
subsitute x=54 in eq 1 for y
54-y=18
-y=18-54
y=36
for check
54+36=90
90=90
54-36=18
18=18
