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Please help!! 50 points I just need the answers no explanation

Please help!! 50 points I just need the answers no explanation-example-1
User Mchr
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1 Answer

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3.2=4/5(b-5)
3.2=(4/5•b)+(4/5•-5)
3.2=4/5b-4
3.2+4=4/5b
5/4•7.2=b
9=b
User Furbeenator
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