Answer:
1176
Step-by-step explanation:
used calculator
Answer: 15/8
Step-by-step explanation:
You could really rewrite -4.5 in an infinite amount of ways. But a couple of simple ones:

or
One way to do this is to factor both parts of the fraction (prime factors):-
45 = 3*3*5
243 = 3*3*3*3*3
note that 3*3 is common to both factors
so we can write its as 5 / 3*3*3 = 5/27