Question

n/5-5/7=2/3 then solve following equations

Answer 1

ans:--4.0476.................

Answer 2

$\textbf{Solution :}$
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$\frac{n}{5} - \frac{5}{7} = \frac{2}{3} \\ \\ = > \frac{21n - 75}{105} = \frac{70}{105} \\ \\ = > 21n = 70 + 75 \\ \\ = > 21n = 145 \\ \\ = > n = \frac{145}{21} \\ \\ = > n = 6 \frac{19}{21}$

$\textbf{Note :}$ I had given the answer in fraction because if I would had written it in decimal then the answer would be approximate not appropriate.


When we transpose a number from one side to another side then the sign changes.

i.e.

( + ) becomes ( - )

( - ) becomes ( + )

( × ) becomes ( ÷ )

( ÷ ) becomes ( × )

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