Answer:
The other integer is - 7.
Explanation:
Let the 2 integers be x and y
Given: 
 one of the integer is -12, Let x = - 12
 Product of two integers is 84, 
 that is,
 x × y = 84
 - 12 × y = 84 [ given one of the integer is -12 ]
 
 [ divide both sides by -12 ]
 [ divide both sides by -12 ]
 
