The two numbers be 3.5 and 10.5.
Here we assume the first number be x
And, the second number be y
So, the sum should be -7
And, the difference is 14
So,
x + y = -7
x - y = 14
2x = 7
x = 3.5
So, y = 3.5 + 7
= 10.5
Therefore, The two numbers be 3.5 and 10.5.
Learn more about number here: https://brainly.com/question/4771124