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marysya [2.9K]
2 years ago
9

The sum of two numbers is 18

Mathematics
1 answer:
r-ruslan [8.4K]2 years ago
4 0

Answer:

x+y=18

x-y=6

add both equation

2x=12

x=6

y=18-6=12

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Answer:

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Step-by-step explanation:

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