-31
19
√112 = √(42 x 7) = √(42) x √7 = 4√7
3x-7+4 = 42 3x-7 = 38 3x = 45 x=15
-4
28, 35, 42, 49, 56.
-41
55
12 x 2 = 42 14 x 3 = 42 7 x 6 = 42 6 x 7 = 42 2 x 12 = 42 3 x 14 = 42
17
42, because if there is nothing between the 7 and 'a' and 'a' equals 6 then the answer is 42.
7
-31
there are 6: 21,28,35,42,49,56
19
3*4=12 3+4=7 hope this helps
7 times 4 times 6 equals 168