더 연습
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| ▭\:\longdivision{▭} | \times \twostack{▭}{▭} | + \twostack{▭}{▭} | - \twostack{▭}{▭} | \left( | \right) | \times | \square\frac{\square}{\square} |
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| - \twostack{▭}{▭} | \lt | 7 | 8 | 9 | \div | AC |
| + \twostack{▭}{▭} | \gt | 4 | 5 | 6 | \times | \square\frac{\square}{\square} |
| \times \twostack{▭}{▭} | \left( | 1 | 2 | 3 | - | x |
| ▭\:\longdivision{▭} | \right) | . | 0 | = | + | y |
step-by-step
Two\:train\:leave\:towns\:777\:kilometers\:apart\:at\:the\:same\:time\:and\:travel\:toward\:each\:other.\:One\:train\:travels\:11\:kmh\:slower\:than\:the\:other.\:If\:they\:meet\:in\:3\:hours.\:What\:is\:the\:rate\:of\:each\:train?
ko
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