Question

irrelevant answers will be report​

Answer 1

Answer:

heres ur answer hope it will help

Answer 2

Answer:

Q 20: r = 1.5

Q 21: t = - 1.1429

Step-by-step explanation:

Answer 20:

(9-r) / 5 = 3 - r

=> 9 - r = 15 - 5r

=> 4r = 6

=> r = 3 / 2

=> r = 1.5

Answer 21:

7 + 3t = (6 - t) / 2

=> 14 + 6t = 6 - t

=> 7t = -8

=> t = -8 / 7

=> t = - 1.1429

Thank you!