21-3(b-7)=b+20 solve this problem please – InterviewSolution

1.

21-3(b-7)=b+20 solve this problem please

Answer» ONG>ANSWER:

b=11/2

Step-by-step explanation:

21-3(b-7)=b+20

⇒21-3b+21=b+20

⇒-3b-b=20-42

⇒-4b=-22

⇒b=11/2

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