I solved it this way. Since it says m=14x+p and p=q+7, so p must be greater than 7 and less than 14 (7<p<14) Use the calculator to quickly list the multiples of 14 in the range of the options(45-100) which are: 42, 56, 70, 84, 98. Now subtract the multiple of 14 inmediately lower than the opti...