Answer:I think its -12
Step-by-step explanation:
usually exponents divided are subtracted i think.
Answer:
-12
8^-55 / 8^a = 8^-43
8^-55 × 8^-a = 8^-43
8^(-55 - a) = 8^-43
-55 - a = 43
-a = 12
a = -12
