Let x be one number and y be the other.
x + y = 54 ------------- (1)
x - y = 10 ------------- (2)
.
<u>Add (1) and (2):</u>
2x = 64
<u>Divide both sides by 2:</u>
x = 32
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<u>Plug x = 32 into (1):</u>
32 + y = 54
<u>Take away 32 from both sides:</u>
y = 22
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Answer: The two numbers are 32 and 22.