Answer:
Explanation:
![13) (5)/(x)=(20)/(16)](https://img.qammunity.org/2023/formulas/mathematics/high-school/lrkml9v9altbkuzlf0lwztxyevyod3lqp2.png)
In the numerator, 20 ÷ 4 = 5
So, x = 16 ÷ 4 = 4
5 : 4 = 20:16
14)
![(2)/(9)=(12)/(x)](https://img.qammunity.org/2023/formulas/mathematics/high-school/h81c5yiluhpr9y3afi08vlpleot1931o5m.png)
In the numerator, 2*6 = 12
So, x = 9*6 = 54
2:9 = 12 : 54
15)
![(x)/(1)=(30)/(3)](https://img.qammunity.org/2023/formulas/mathematics/high-school/xny7i8ufnaqg8els2q8d65ley97lizt2ea.png)
In the denominator 3 ÷ 3 = 1
So, 30 ÷ 3 = 10
10 : 1 = 30 : 3
![16)(x)/(5)=(21)/(35)](https://img.qammunity.org/2023/formulas/mathematics/high-school/7iqhwals0fbbel4u10gne8l3aumiachjsu.png)
In the denominator, 35 ÷ 7 = 5
x = 21 ÷ 7 = 3
3 : 5 = 21 : 35
![17) (21)/(x)=(7)/(2)](https://img.qammunity.org/2023/formulas/mathematics/high-school/q0z8f874byfbg2ine4em8fx905j2ljohx4.png)
In the numerator, 7 *3 = 21
So, x = 2*3 = 6
21: 6 = 7 : 2