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=

Question

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=

Answer 1

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

Answer 2

1)4 2/9*2 4/7+1 2/9+2 4/7=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=170/9+2-80/9=90/9+2=10+2=12