so um whats the sum of two numbers is 9 and their difference is 7
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Answer:
The numbers are 8 and 1.
Step-by-step explanation:
Let the numbers be x and y.
x + y = 9
x - y = 7
(x + y) + (x-y) = 9 + 7 = 16
x + y + x - y = 16
2x = 16
x = 16/2 = 8
y = 9 - x = 9 - 8 = 1
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