9514 1404 393
Answer:
- one number is -3.5
- the other number can be any non-integer rational, 3.4 for example
Explanation:
Let a and b represent the numbers, and let s and d represent the sum and difference.
a + b = s
a - b = d
We want ...
s = d -7
(a +b) = (a -b) -7
2b = -7 . . . . . . . . . add b-a to both sides
b = -7/2 . . . . the number subtracted to obtain the difference
There is nothing here that puts any restriction on the value of 'a'. The other number can be any value. We could have, for example, a = 3.4.
For a = 3.4, b = -3.5
sum = 3.4 +(-3.5) = -0.1
difference = 3.4 -(-3.5) = 6.9
The sum is 7 less than the difference:
6.9 -7 = -0.1 . . . as required