Решите примеры 1)4 2/9*2 4/7+1 2/9*2 4/7= 2)2 - вопрос №448236714292471292472256623310623623113 от omy00god 19.02.2023 00:14

Question

Математика: Решите примеры 1)4 2/9*2 4/7+1 2/9*2 4/7= 2)2 5/6*6 2/3+3/10*6 2/3_6 2/3*1 1/3=

omy00god · Answer

1)4 2/9*2 4/7+1 2/9*2 4/7= 38/9 * 18/7 + 11/9 * 18/7 = 38/1 * 2/7 + 11/1 * 2/7 = 76/7 + 22/7 = 98/7 = 14
2)2 5/6*6 2/3+3/10*6 2/3_6 2/3*1 1/3= 17/6 * 20/3 + 3/10 * 20/3 - 20/3 * 4/3 = 17/3 * 10/3 + 1/1 * 2/1 - 80/9 = 170/9 + 2 - 80/9 = 170/9 + 18/9 - 80/9 = 108/9 = 12