homework help not understanding this problem

label Mathematics
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

Feb 4th, 2015

scale factor = 5/3

4/a=5/3

a = 12/5

2/(b-6) = 5/3

b-6 = 6/5 = 1.2

b=7.2


please best me


Feb 4th, 2015

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