( \(\frac{3x}{7}\) + 1 ) : ( - 4 ) = \(\frac{-1}{28}\)
=> (\(\frac{3x}{7}\) + 1 ) = \(\frac{-1}{28}\)\(\cdot\) ( - 4 )
=> (\(\frac{3x}{7}\) + 1 ) = \(\frac{1}{7}\)
=> \(\frac{3x}{7}\) = \(\frac{1}{7}\)- 1
=> \(\frac{3x}{7}\)= \(\frac{-6}{7}\)
=> 3x = - 6
=> x = ( - 6 ) : 3
=> x = -2
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