Anonymous
The sum of two numbers is 22 and their difference is 16. What are the numbers?
15 Answers
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 RRLv 79 months ago
x + y = 22
x  y = 16
Add the equations together (note the "y")
2x = 38
x = 19
Substitute into x + y = 22
19 + y = 22
y = 3
ANS 19 and 3
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 LônLv 79 months ago
x + y = 22
x  y = 16
_________ add
2x = 38
x = 19
so y = 22  19
y = 3
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 ComoLv 79 months ago

x + y = 22
x  y = 16________add
2x = 38
x = 19
19 + y = 22
y = 3
Numbers are 3 and 19
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 sepiaLv 79 months ago
The sum of two numbers is 22 and their difference is 16.
x + y = 22, x  y = 16
The two numbers are 19 and 3.
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 PuzzlingLv 79 months ago
Let a be the bigger number.
Let b be the smaller number.
Write two equations:
a + b = 22
a  b = 16
Add them together:
2a = 38
a = 38/2
a = 19
Then solve for b:
19 + b = 22
b = 3
Answer:
3 and 19
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