а) 23Y - 15 = 4223Y = 422 + 123Y = 43Y = 437 / 2Y = 19
б) (18 + 23Z) - 127 = 918 + 23Z - 127 = 923Z - 109 = 923Z = 98 + 1023Z = 20Z = 207 / 2Z = 9
Ответ: а) Y = 19, б) Z = 9.
а) 23Y - 15 = 42
23Y = 422 + 1
23Y = 43
Y = 437 / 2
Y = 19
б) (18 + 23Z) - 127 = 9
18 + 23Z - 127 = 9
23Z - 109 = 9
23Z = 98 + 10
23Z = 20
Z = 207 / 2
Z = 9
Ответ: а) Y = 19, б) Z = 9.