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28.05.2021 •
Mathematics
Marty swam 2 3/4 laps in 5 1/2 minutes. How long did it take him to swim one lap?
please note: 2 3/4 and 5 1/2 are mixed fractions
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Ответ:
For a linear system like you could say that by inspection there is no solution because "two (of the same) numbers can't have different sums." you could say that by inspection, the solution is (0, 5) because both lines have the same y-intercept but different slopes.