Решите уравнение х+6.17/26=8.1/39

х + 6 17/26 = 8 1/39

х + 6 51/78 = 8 2/78

х = 8 2/78 - 6 51/78

х = 7 80/78 - 6 51/78

х = 1 целая 29/78

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проверка: 1 29/78 + 6 17/26 = 1 29/78 + 6 51/78 = 7 80/78 = 8 2/78 = 8 1/39.

101*(351+у)=65549

у=65549: 101

351+у=649

у=649-351

у=298

проверка

101*(351+298)=65549

65549=65549