Answer:
12 y 42
Explanation:
Let x and y represent the two numbers:
(1) x+y=54 and (2) x-y=30
Solve for x:
x-y=30
x=30-y
Substitute into equation (1):
(30-y)+y=54
2y+30=54
2y=24
y=12
Substitute into equation (2):
x-12=30
x=42
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