SOLUTION: the sum of two numbers is 11 at most. Their difference is 21. What are these two numbers?
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Question 111203: the sum of two numbers is 11 at most. Their difference is 21. What are these two numbers?
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
Let numbers be and , and assume that
If the sum of two numbers is at most, we have:
If their difference is we have:
Now we have a system of equations:
Solve it by adding:
+ .....add both equations and eliminate
divide both sides by
Now find
plug in
..move to the right
Check:
Plug in values for and in previous formulas:
another equation
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