andrespekla andrespekla

30-09-2021
Mathematics

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Solve 15(1/3b+3) ≤ 6(b+9).

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04-10-2021

Answer:

15(1/3b+3)≤6(b+9)

3b+3×15(1/3b+3)≤3b+3×6(b+9)

15≤3b+18(b+9)

15≤3b+18(b+9)

15≤21b+162

162-15≤216

147≤216

147/21≤b

7≤b

b≤7

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