Найдите значение выражения: 4×(3ц1/8х+2ц1/4)+1ц1/2х, если х=2/7,х=1,2 (P.s. ц=целая часть)

Если х = 2/7, то 4 * (3 1/8х + 2 1/4) + 1 1/2х = 4 * (3 1/8 * 2/7 + 2 1/4) + 1 1/2 * 2/7 = 4 *

* (25/8 * 2/7 + 9/4) + 3/2 * 2/7 = 4 * (25/4 * 1/7 + 9/4) + 3/7 = 4 * (25/28 + 9/4) + 3/7 =

= 4 * (25/28 + 63/28) + 3/7 = 4 * 88/28 + 3/7 = 88/7 + 3/7 = 91/7 = 13; 

Если х = 1,2, то 4 * (3 1/8х + 2 1/4) + 1 1/2х = 4 * (3 1/8 * 1,2 + 2 1/4) + 1 1/2 * 1,2 = 4 *

* (25/8 * 1,2 + 9/4) + 3/2 * 1,2 = 4 * (30/8 + 9/4) + 3,6/2 = 4 * (30/8 + 18/8) + 3,6/2 = 4 *

* 48/8 + 1,8 = 4 * 6 + 1,8 = 24 + 1,8 = 25,8.