Question

Really need help. please​

Answer 1

Answer: 1. n=5

2. n=30

3. n=8

4. n=20

Explanation:

1. 3*3=9

4*3=12

n*3=15

n=5

2. 15*10/15=10

n*10/15=20

n*2/3=20

n=20*3/2

n=60/2

n=30

3. 12/9=4/3

n/6=4/3

n=4/3 * 6

n=24/3

n=8

4. 6*10/6=10

9*10/6=

90/6=15

12*10/6=

120/6=20

n=20