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Question 821587: the sum of two numbers is 77 and their difference is 31. what is their product?
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! ---
x + y = 77
y - x = 31
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put the system of linear equations into standard form
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x + y = 77
-x + y = 31
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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answer:
x= 23
y= 54
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