|х + у| + у = |-1 4/15 + 2 7/ 18| + 2 7/18 = |-1 24/90 + 2 35/90| + 2 35/90 =
|1 11/90| + 2 35/90 = 3 46/90
|х + у| + у = |-1 4/15 + 2 7/ 18| + 2 7/18 = |-1 24/90 + 2 35/90| + 2 35/90 =
|1 11/90| + 2 35/90 = 3 46/90