Answer:
B. (8,-5)
Step-by-step explanation:
Let the numbers be A and B
The sum of the two numbers = 3
That’s
A + B = 3
Their difference is 13
That’s
A - B = 13
We now have two equations
1. A + B = 3
2. A - B = 13
Subtract equation one from equation two
2B = -10
Divide both sides by 2
2B/2 = -10/2
B = -5
Substitute -5 for B into any of the equations to get A
Using equation 1
We have
A + B = 3
A + -5 = 3
A - 5 = 3
Add 5 to both sides
A - 5 + 5 = 3 + 5
A = 8
The numbers are 8 and -5
