[tex]x = (4 \div (2 - \frac{2}{5} ) + 1) \div (7 - (2 \div \frac{1}{3} ))[/tex]
[tex]x = (4 \div \frac{8}{5} + 1) \div (7 - (2 \times 3))[/tex]
[tex]x = (4 \times \frac{5}{2} + 1) \div (7 - 6)[/tex]
[tex]x = ( \frac{5}{2} + 1) \div 1[/tex]
[tex]x = \frac{7}{2} [/tex]