Solve the equation2/7=4/5+9a

Martin Foot asked Oct 23, 2023

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Martin Foot asked Oct 23, 2023

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13 votes

The given equation is

First, we subtract 4/5 from each side.

$\begin{gathered} (2)/(7)-(4)/(5)=(4)/(5)-(4)/(5)+9a \\ 9a=(10-28)/(35) \\ 9a=(-18)/(35) \end{gathered}$

Then, we divide the equation by 9.

$\begin{gathered} (9a)/(9)=(-18)/(35\cdot9) \\ a=-(2)/(35) \end{gathered}$

Yuvaraj P answered Oct 27, 2023

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