Math, asked by MNSD, 6 months ago

please help me to solve ​

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Answers

Answered by kookietaelicious
1

Answer:

480=1/2*(a+20)*15

480=15/2*(a+20)

480=15a/2+150

15a+300/2=480

15a+300=960

15a=660

a=44

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