Take the letter out and replace it with the number that has the exact letter like x-10.
First off, mass is not measured in pounds, weight is.
But, I can still solve this for you!
1/14 * 3/4
3/56 pounds is your answer
Hope this helps!
If 4·10= 40 then 4·-10 would equal -40 bc a positive times a negative equals a negative.
Hope this helped!!