1) 7 (х-19) = 133

2) 9 (213-2 х) = 927

3) 1344: (х+26) = 32

4) 384: (51-5 х) = 24

1) 7 (х-19) = 133

7x - 133 = 133

7x = 133 + 133

7x = 266

x = 266/7

x = 38

2) 9 (213-2 х) = 927

1917 - 18x = 927

18x = 1917 - 927

18x = 990

x = 990 / 18

x = 55

3) 1344: (х+26) = 32

1344 / (x+26) = 32

32 (x + 26) = 1344

x + 26 = 1344/32

x + 26 = 42

x = 42 - 26

x = 16

4) 384: (51-5 х) = 24

384 / (51 - 5x) = 24

24 (51 - 5x) = 384

51 - 5x = 384 / 24

51 - 5x = 16

5x = 51 - 16

5x = 35

x = 35 / 5

x = 7