А)
Х= 560 + 90:а - решения - Х(2) = 560+45 = 605, Х(3) =560+30 = 590,
Х(5) = 560+18 = 578, Х(10) = 560+9 = 569, Х(45) = 560+2 = 562.
б)
У = 45*с- 109 - решения - У(4) = 180-109 = 71, У(6) = 270-109 = 161,
У(8) = 360-109 = 251.
в)
Z = 912-105:d - решения - Z(3) = 912-35 = 877, Z(5) = 912-21 = 891, Z(7) = 912-15 = 897.