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`71 - (33 + x) = 26`

`33+ x = 71 - 26`

`33 + x = 45`

`x = 45 - 33`

`x= 12`

`(x + 73) - 26 = 76`

`x + 73 = 76 + 26`

`x + 73 = 102`

`x= 29`

` 45 - (x + 9) = 6`

`x + 9 = 45-  6`

`x +9 = 39`

`x =30`

` 89 - (73 - x) = 20`

`73 - x = 83 - 20

`73 -x = 23`

`x = 73 - 23`

`x  = 50`

` (x + 7) - 25 = 13`

`x + 7 = 13 + 25`

`x + 7 = 38`

`x = 38 - 7`

`x = 31`

` 198 - ( x + 4) = 120`

`x + 4 = 198 - 120`

`x + 4 = 78`

`x =78 - 4`

`x = 74`

`140 : (x - 8) =  7`

`x - 8 = 140 : 7`

`x - 8 =20`

`x = 20 + 8`

`x = 28`

`4.(x +41) = 400`

`x + 41 = 400 : 4`

`x + 41 = 100`

`x =100 - 41`

`x  =59`

`11.(x-9) = 77`

`x  -9 = 77 : 11`

`x  -9 = 7`

`x  =7 + 9`

`x = 16`

`5.(x-9) = 350`

`x - 9 = 350 : 5`

`x - 9 = 70`

`x = 70 + 9`

`x  =79`

` 2x - 49 = 5.3^2`

`2x - 49 =  5. 9`

`2x - 49 = 49`

`2x = 49 +49`

`2x= 98`

`x = 98 : 2`

`x= 49`

` 200 - (2x + 6) = 4^3`

`2x + 6 = 200 - 64`

`2x + 6 = 136`

`2x = 136 - 6`

`2x = 130`

`x=65`