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Answer :
Here we have, 7x – 9 = 16
\(\Rightarrow\) 7x – 9 + 9 = 16 + 9 (adding 9 to both the sides)
\(\Rightarrow\) 7x = 25
\(\Rightarrow\) 7x ÷ 7 = 25 ÷ 7 (dividing both the sides by 7)
\(\Rightarrow\) x = \(\frac { 25 }{ 7 }\)
Thus, x = \(\frac { 25 }{ 7 }\) is the required solution.
Check:
Keep x = \(\frac { 25 }{ 7 }\) in the given solution
L.H.S=\(7x-9=7×\frac{25}{7}-9=25-9=16\)=R.H.S
Hence x = \(\frac { 25 }{ 7 }\) is the required solution.