Answer: 41. A) 0 Â Â Â 42. B) 1/12 Â Â Â 43. B) 16
Step-by-step explanation:
The pattern is: multiply the bottom row and subtract the top number.
Sample: 3 x 2 - 5 = 1
       5 x 3 - 6 = 9
       2 x 1 - 1 = 1
41) 7 x 13 - x = 91
     91 - x = 91
        x = 0
42) Â 1/2 x 1/2 - 1/6 = x
       1/4   - 1/6 = x
     3/12 - 2/12 = x
           1/12 = x
Check the fractions. I had to guess what the denominators are because the image is blurry. Â Â Â Â Â Â Â Â Â Â Â Â Â
43) Â 8 x 3 - 8 - x
     24 - 8 = x
        16 = 0
