Question

быстрееее!!!!!!!!!!!!!

Answer 1

2 2/3x = 3 1/21 + 1 5/7 
2 2/3x = 3 1/21 + 1 15/21
2 2/3x = 4 16/21
x = 4 16/21 : 2 2/3
x = 100/21 * 3/8
x = 25/14
x = 1 11/14

Answer 2

8/3х=64/21+12/7  (общий знаменатель 21)
56х=64+36
х=100/56
х=1 11/14