Question

The sum of two integers is 5. Their difference is 11. What are

the two integers?
А
3 and 14
B
-3 and 8
с
2 and 3
D
-14 and -3

Answer 1

B) 8 and -3

Explanation:

x + y = 5

x - y = 11

we could use the substitution method as follows:

x = 5 - y is the same as x + y = 5

substitute '5 - y' for 'x' in the second equation to get:

5 - y - y = 11

5 - 2y = 11

-2y = 6

y = -3

x + (-3) = 5

x = 8