t÷(6400-6393)=8500 (6400-6393=7).
t÷7=8500
t=8500×7
t=59500.
Проверка 59500÷(6400-6393)=8500.
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t÷(6400-6393)=8500 (6400-6393=7).
t÷7=8500
t=8500×7
t=59500.
Проверка 59500÷(6400-6393)=8500.