Answer:
I think it is 4 or 104. There are 2 ways to look at it.
Way #1:
50 + 50 = 100
100 - 25 = 75
75 x 0 = 0
2 + 2 = 4
0 + 4 = 4
Way #2:
25 x 0 = 0
100 - 0= 100
100 + 4 = 104
104
Explanation:
Any expression multiplied by 0 equals 0
when adding or subtracting 0, the quantity doesn't change
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