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- 20 = 8(2f+5)could I get some help

User Anpan
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\begin{gathered} -20=8(2f+5) \\ \text{Dividing both sides by 8, we have:} \\ (-20)/(8)=2f+5 \\ \Rightarrow(-5)/(2)=2f+5 \end{gathered}
\begin{gathered} \Rightarrow2f+5=(-5)/(2) \\ 2f=(-5)/(2)-5=(-15)/(2) \\ \Rightarrow f=((-15)/(2))/(2)=(-15)/(4)=-3(3)/(4) \end{gathered}

User Neara
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