Answer:
d = (-9/13)
Step-by-step explanation:
13d + 8 = -1
-8 -8
13d = -9
÷13 ÷13
d = ( -9/ 13 )
I hope this helps!
I don't know if this is the answer that you are looking for, but would the answer be all solutions?
Answer:
-4
Step-by-step explanation:
('+')('-') = ('-')
Therefore,
(+2)(-2) = (-4)