Let's solve each equation step by step:

1) 37 + (73 - x) = 27
First, simplify the expression inside the parentheses:
37 + 73 - x = 27
110 - x = 27
Next, isolate x by subtracting 110 from both sides:
-x = 27 - 110
-x = -83
Finally, multiply both sides by -1 to solve for x:
x = 83

2) 96 + (26 - x) = 11
First, simplify the expression inside the parentheses:
96 + 26 - x = 11
122 - x = 11
Next, isolate x by subtracting 122 from both sides:
-x = 11 - 122
-x = -111
Finally, multiply both sides by -1 to solve for x:
x = 111

3) (x + 13) - 38 = 48
First, simplify the expression inside the parentheses:
x + 13 - 38 = 48
x - 25 = 48
Next, isolate x by adding 25 to both sides:
x = 48 + 25
x = 73

4) (x - 45) - 33 + 70
This equation is not complete. It is missing an equal sign or another operation.

5) (x + 53) - 96 = 12
First, simplify the expression inside the parentheses:
x + 53 - 96 = 12
x - 43 = 12
Next, isolate x by adding 43 to both sides:
x = 12 + 43
x = 55

6) 36 - (x - 45) = 29
First, simplify the expression inside the parentheses:
36 - x + 45 = 29
81 - x = 29
Next, isolate x by subtracting 81 from both sides:
-x = 29 - 81
-x = -52
Finally, multiply both sides by -1 to solve for x:
x = 52