1целая 3/4:1/2х=2целых 5/8 :1целую 1/2

[latex]1 \frac{3}{4} : \frac{1}{2} = 2 \frac{5}{8} : 1 \frac{1}{2} = \frac{21}{8} : \frac{3}{2} = \frac{21*2}{8*3} = \frac{7}{4} = 1 \frac{3}{4} [/latex]