x=56

[tex](x \div 7) \times 9 = x + 16 \\ ( \frac{1}{7} ) \times 9 = x + 16 \\ \frac{1}{7 } \times 9 = x + 16 \\ \frac{9}{7} = x + 16 \\ 9x = 7x + 112 \\ 9x - 7x = 112 \\ 2x = 112 \\ x = 56[/tex]