Question

n/7-5/7=2/3


solved the equations

Answer 1

n/7-5/7 = 2/3
n/7=2/3 + 5/7
n/7=(2*7 + 5*3)/21
n/7=(14 + 15)/21
n/7=29/21
n=29/3

Answer 2

$\textbf{Solution :}$
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Accrording to question

$\frac{n}{7} - \frac{5}{7} = \frac{2}{3} \\ \\ = > \frac{n - 5}{7} = \frac{2}{3} \\ \\ = > 3(n - 5) = 2(7) \\ \\ = > 3n - 15 = 14 \\ \\ = > 3n = 14 + 15 \\ \\ = > 3n = 29 \\ \\ = > n = \frac{29}{3}$


$\textbf{Conclusion :}$
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In the second step, We had done cross multiplication to solve it.


We know, that when we transfer a number from LHS to RHS or from RHS to LHS —

( - ) becomes ( + )

( + ) becomes ( - )

( × ) becomes ( ÷ )

( ÷ ) becomes ( × )


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$\boxed{Hope\:it\:helps\:you!}$
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