Answer:
B
Step-by-step explanation:
Answer:
Step-by-step explanation:

Combine like terms. 1/4 and 7/8 are like terms and LCD of 4 and 8 is 8
9/10y and -3/5y are like terms and LCD of 10 , 5 is 10

Answer:84.8
Step-by-step explanation:
Answer:
-2+4i
Step-by-step explanation:
Simplify by combining the real and imaginary parts of each expression.
Answer: 9840
Step-by-step explanation:
Idk