Помогите решить пример
( 1,75 ÷ 2/3 - 1 3/4 ÷ 1,125 ) × 1 5/7 = ( 7/4 × 3/2 - 7/4 ÷ 9/8 ) × 12/7 = ( 21/8 - 7/4 × 8/9 ) × 12/7 = ( 21/8 - 7 × 2/9 ) × 12/7 = ( 21/8 - 14/9 ) × 12/7 = 77/72 × 12/7 = 11/6