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n200080 [17]
3 years ago
6

Find two numbers whose sum is 9 and whose difference is -1

Mathematics
2 answers:
faltersainse [42]3 years ago
7 0
4 and 5 because four plus five is nine and five minus four is one
faltersainse [42]3 years ago
4 0

Answer:

4 and 5

Step-by-step explanation:

Make a system of equations:

x+y=9

x-y=-1

x=9-y

9-y-y=-1

9-2y=-1

-2y=-10

y=5

Since y=5, x must be 4 since 4+5=9 and 4-5=-1

Hope this helped!

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