а) 23Y - 15 = 42223Y = 422 + 1523Y = 437Y = 437 / 23Y = 19
б) (18 + 23Z) - 127 = 9818 + 23Z - 127 = 9823Z - 109 = 9823Z = 98 + 10923Z = 207Z = 207 / 23Z = 9
Ответ: а) Y = 19, б) Z = 9.
а) 23Y - 15 = 422
23Y = 422 + 15
23Y = 437
Y = 437 / 23
Y = 19
б) (18 + 23Z) - 127 = 98
18 + 23Z - 127 = 98
23Z - 109 = 98
23Z = 98 + 109
23Z = 207
Z = 207 / 23
Z = 9
Ответ: а) Y = 19, б) Z = 9.