Answer:
x=-10.5
Explanation:
X is a variable substitute. If you wanted to figure out what x is then you would divide -4x by -4 . You would also end up dividing 42 by -4 because whatever you do to one side you have to do to the other. 42 / -4 should equal -10.5 . this number is also negative because a negative times a negative, the signs of cancel each other out creating a positive .