Question

find two numbers who sum is 1 and whose difference is 7

Answer 1

Answer:

4 and -3 are the numbers ok

Answer 2

Answer:

Step-by-step explanation:

Let the 2 integers be x and y

Given:

x + y = 1

x - y = 7

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Add both equations:

2x = 8

x = 4

Substitute x in any of the 2 equations

x + y=1

4 + y=1

y = 1-4

y = -3