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Maslowich
3 years ago
11

The sum of two numbers is 87. The difference of the same to numbers is negative 111. Find the numbers.

Mathematics
1 answer:
anyanavicka [17]3 years ago
5 0

Answer:

99 and - 12

Step-by-step explanation:

let x and y be the 2 numbers, then

x + y = 87 → (1)

x - y = - 111 → (2)

Adding the 2 equations term by term eliminates the y- term

2x = - 24 ( divide both sides by 2 )

x = - 12

Substitute x = - 12 into (1)

- 12 + y = 87 ( add 12 to both sides )

y = 99

The 2 numbers are 99 and - 12

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