Решите уровнениия*= это умножить 31*(8x-14+x)=682 32*(15x-6x-2)=800 1431: (363-8x)=53 3168: (1032-19x)=72

31 * (8х - 14 + х) = 682
8х - 14 +х = 682 : 31
8х - 14 + х = 22
8х + х = 22 + 14
9х = 36
х = 36 : 9 
х = 4

32 * (15х - 6х -2) = 800
15х - 6х - 2 = 800 : 32
15 х - 6х - 2 = 25
15х - 6х = 25 + 2
9х = 27
х = 27 : 9
х = 3

1431 : (363 - 8х) = 53
363 - 8х = 1431 : 53
363 - 8х = 27
8х = 363 - 27
8х = 336
х = 336 : 8
х = 42

3168 : (1032 - 19х) = 72
1032 - 19х = 3168 : 72
1032 - 19х = 44
19х = 1032 - 44
19х = 988
х = 988 : 19
х = 52