Answer:
5:2
Step-by-step explanation:
18 and 45 are both multiples of nine, so I divided both sides by nine.
18/9 = 2
45/9 = 5
5 and 2 are prime numbers, so you can't simplify any further.
2:5
18:45
Divide by 9 on each side
18/9 =2
45/9 =5
