Well -15 divided by 3 is -5, so -5\5 = -1. But that's not one of the answers...
X-y=7
y=3x+12|-3x
x-y=7
-3x+y=12
---------------------,-
-2x=19
x=-19/2
.25 is the answer because the next number should be half of the previous number and the opposite sign of the previous number.
Answer:
(4,−5)
Step-by-step explanation: