If they have the same charge
x+x+x+x+x+x+x=-42
7x=-42
x=-6
so to check our answer
-6-6-6-6-6-6-6=-42
-12-12-12-6=-42
-24-18=-42
-42=-42
There is 8 pints in 1 gallon so 12x8=96
96 pints to fill a 12 gallon pot
<em><u>Look at the attached picture⤴</u></em>
<em><u>Hope it will help u....:)</u></em>