Question

Кто сможет решить помогите ;))(((())))​

Answer 1

1) 1 1/5 - 2/7

= 1 7/35 - 10/35 =42/35 - 10/35 = 32/35.

2) 1 - 2/9

= 9/9 - 2/9 = 7/9.

3) 4 - 3/4

= 16-3 / 4

= 13/4 = 3 1/4.

Answer 2

$\displaystyle 1\frac{1}{5} -\frac{2}{7} =\frac{5*1+1}{5} -\frac{2}{7} =\frac{6}{5} -\frac{2}{7} =\frac{(7*6)-(5*2)}{35} =\frac{42-10}{35} =\frac{32}{5} ;\\1-\frac{2}{9} =\frac{9-2}{9} =\frac{7}{9} ;\\4-\frac{3}{4} =\frac{16-3}{4} =\frac{13} {4} =3\frac{1}{4} .$