-19 to -15 would be a positive 4 difference
19 to 15 = 4 this would be a -4 difference
3 to 7 is a positive 4 difference
-3 to 7 is a difference of 10
so there is 1 with a -4 difference
answer is B.
The answer questions to your question is 86
17 * 0 + -2.
Now we rewrite the equation and make it 17 * 0 - 2 and u get -2.
