а. (56-56):342+(289-288)×122
1) 56 - 56 = 0
2) 0 / 342 = 0
3) 289 - 288 = 1
4) 1 * 122 = 122
5) 0 + 122 = 0
б. (56+46)+23+(444-443)×34
1) 56 + 46 = 102
2) 444 - 443 = 1
3) 1 * 34 = 34
4) 102 + 23 = 125
5) 125 + 34 = 159
