Question

Calcule [2/5x(2-3/4)]:(1/2)

Answer 1

$=(\frac{2}{5}.(2-\frac{3}{4})):\frac{1}{2} \\\\=(\frac{2}{5}.\frac{5}{4} ):\frac{1}{2}\\\\=\frac{1}{2} : \frac{1}{2} \\\\=\frac{1}{2}.2\\\\=1$