помогите пж, умоляю, заблаговременно спасибо

1.
6 11/18+2 7/12=6 22/36+2 21/36=8 43/36=9 7/36
7 1/26 - 5 8/39=7 3/78 - 5 16/78=6 81/78 - 5 16/78=1 65/78 = 1 5/6
10 3/7 - (4 1/6+3 2/21)=10 18/42 - 4 7/42 - 3 4/42=3 7/42=3 1/6
3 7/9+1,375 - 1 7/12=3 28/36 - 1 21/36+1,375=2 7/36+1 3/8=2 14/72+1 27/72=3 41/72

2.
(х - 1 7/9)+2 1/12=3 3/4
х - 1 7/9=3 9/12 - 2 1/12
х - 1 7/9=1 8/12
х-1 7/9=1 2/3
х=1 6/9+1 7/9
х=2 13/9
х=3 4/9

6 5/6 - (2 7/8 - х)=5,375
6 20/24 - 2 21/24+х=5,375
3 23/24+х=5 3/8
х=5 3/8 - 3 23/24
х=5 9/24 - 3 23/24
х=1 10/24
х=1 5/12