Question

do only the circle ones plz​

Answer 1

vii)

$</p><p></p><p>\Rightarrow \quad \left( 3^{-1} + 4^{-1} \right) \left( \frac{7}{12} \right)^{-1} </p><p></p><p>\\ \\</p><p></p><p>\Rightarrow \quad \left( \frac{1}{3} + \frac{1}{4} \right) \times \frac{12}{7} </p><p></p><p>\\ \\</p><p></p><p>\Rightarrow \quad \left( \frac{4 + 3}{12} \right) \times \frac{12}{7} </p><p></p><p>\\ \\</p><p></p><p>\Rightarrow \quad \frac{\cancel{7}}{\cancel{12}} \times \frac{\cancel{12}}{\cancel{7}}</p><p></p><p>\\ \\</p><p></p><p>\Rightarrow \quad \bold{1} </p><p></p><p>$