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Dovator [93]
3 years ago
12

The sum of 2 numbers is 54. Their difference is 116. What are the numbers?

Mathematics
1 answer:
nadya68 [22]3 years ago
3 0
Answer:

85 and -31

Explanation:

x + y = 54

x - y = 116

solve for x in first equation

x = 54 - y

sub into second equation

54 - y - y = 116

54 - 2y = 116

-2y = 62

y = -31

sub in x equation

x = 54 - (-31)

x = 85
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