Respuesta :

Answer:

1. 3

2. 1

3. 9

4. 30

Step-by-step explanation:

1. 2*(18/12) = 3

2. 3*(5/15) = 1

3. 4*(45/20) = 9

4. 21*(10/7) = 30

Answer:

1. 2:x and 12:18

6

2. 2:15 and x:3

1

3. x:4 and 45:20

9

4. 21:x and 7:10

24

Step-by-step explanation:

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