delilahrae8 delilahrae8
  • 01-05-2020
  • Mathematics
contestada

1/4(8b-80)+b=70 find b

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salatulmaghrib
salatulmaghrib salatulmaghrib
  • 01-05-2020
2b - 20 + b = 70
3b = 90
b = 30
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