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heres ur answer hope it will help
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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!
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