2 1/4 : 1 4/11 - 3/8 : 7/8 =

Question

2 1/4 : 1 4/11 - 3/8 : 7/8 =

Answer 1

= 9/4 : 15/11 - 3/8 * 8/7 = 33/20 - 3/7 = 1ц 13/20 - 3/7 = 1ц 91/140 - 60/140 = 1ц 31/140

Comments

Где целые понятно или отделить точками?

Answer 2

2 1/4 : 1 4/11 - 3/8 : 7/8 =9/4 : 15/11 - 3/8 * 8/7 =9/4 *11/15 - 3/8 * 8/7 =3/4*11/5-3/7=33/20-3/7=(33*7-3*20)/140=(231-60)/140=171/140=1 31/140