What is the answer for the puzzle 126=76, 132=32, 208=58, 261=?

Question

If
10-2= 33
37-23=83
82-4= 43
55-7=32
then
76-45=?

Answer 1

61

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126 -50*1 = 76,
132- 50*2 = 32,
208- 50*3 = 58,
261 - 50*4 = 61