leighastephenson9 leighastephenson9

10-03-2022
Mathematics

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Solve. Use the strategy "work backward."

Larissa said, "If you multiply my age by 3, subtract 6 from the product, then divide the difference by 5, the result is 9." What is Larissa"s age?

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Аноним Аноним

10-03-2022

Let that be x

ATQ

[tex]\\ \rm\Rrightarrow 3x-6/5=9[/tex]

Arrange accordingly to work backwards(Every thing is reversed)

[tex]\\ \rm\Rrightarrow 9(5)+6/3=x[/tex]

[tex]\\ \rm\Rrightarrow 45+6/3=x[/tex]

[tex]\\ \rm\Rrightarrow 51/3=x[/tex]

[tex]\\ \rm\Rrightarrow x=17[/tex]

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