Mathematics
Mathematics, 24.02.2021 23:30, sarah1tice

There are two mystery numbers. The sum of 7 times the first number and 5 times the second number is -11. The sum of 10 times the first number and 8 times the second number is -20. What are the two numbers?

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There are two mystery numbers. The sum of 7 times the first number and 5 times the second number is...

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