2:2-3+75

Let's evaluate the expression step by step:

2:2 - 3 + 75

First, interpret the ':' as division:

2 ÷ 2 - 3 + 75

Calculate 2 ÷ 2:

1 - 3 + 75

Then, perform the subtraction and addition from left to right:

1 - 3 = -2

-2 + 75 = 73

Final answer: 73