First:
Answer: B = 1955

[(143*5 + 67) * 5] / 2 = [(715 + 67) * 5] / 2 = 3910 / 2 = 1955

Second:
Answer: A X= .5

After - cancelation it remains
-10x = -5 <=> 10x = 5 => x = .5

Third
Answer: Tricky :-) (depends how you look at it)

But, i choose this one -> Solution 1 = B. False

Solution 1: B. FALSE
Reason: 10 * 3 = 150 <=> 30 = 150 => false

Solution 2: A. TRUE
If it is taken as multiply, the answer is simple because its only multiplication and N being present in both sides, also N = 0 => 0 = 0 - true