а) х/b∧3
b) 2*2(3a-b)/(3a-b)3a+b)=4/3a+b
c) (-2a^4)^3/(3b^)^3=-8a^12/27b^6
d)x^3-16x/3xy*6y/2x+8=x^3-16/2x+8=x(x^2-16)/2(x+4)=x(x+4)(x-4)/2(x+4)=x(x-4)/2
73:8=9(ост.6)
79:8=9(ост.7)
36:7=5(ост.1)
41:7=5(ост.6)
81:20=4(ост.1)
99:20=4(ост.19)
61:30=2(ост.1)
89:30=2(ост.29)
2:9=0(ост.9)
7:8=0(ост.8)
989:3=329(ост.2)
549:5=109(ост.4)
351:4=87(ост.3)
629:6=104(ост.5)
5:6=0(ост.6)