Question

The average of two numbers is -18. Their difference is also - 18. Find the numbers.​

Answer 1

Answer:

$required \: numbers \: are \: \: - 27 \: \: and \: \: \: - 9.$

Step-by-step explanation:

$\frac{x + y}{2} = - 18 \\ \\ x + y = - 36 \\ \\ x - y = - 18 \\ \\ adding \: these \: equations \\ \\ 2x = - 54 \\ \\ x = - 27 \\ \\ y = - 36 - x \\ \\ y = - 36 + 27 \\ \\ y = - 9 \\ \\ required \: numbers \: are \: \: - 27 \: \: and \: \: \: - 9.$