Question

The sum of two numbers is 12. the difference of the same two numbers is -4 . find the two numbers

Answer 1

(4,8)

x=4

y=8

Explanation:

x is the first number

y is the second number

x+y=12

x-y= -4

Let's add y and 4 to the second equation to get y by itself

x+4=y

We can substitute this value in for y in the first equation

x+x+4=12

2x=8

x=4

We can then use x=4 and plug that into any equation

4+y=12

y=8

The answer is (4,8)