ответ: 1) (3a+12b)/6ab= 3(a+4b)/6ab=(a+4b)/2ab=a/2ab+4b/2ab=
1/2b+2/a
2) (15b-20c)/10b=5(3b-4c)/10b=(3b-4c)/2b=3/2-2c/b
3) (2a-4)/3(a-2)=2(a-2)/3(a-2)=2/3
4)5x(y+2)/6y+12=5x(y+2)/6(y+2)=5x/6
5)(a^2-3b)/(a^3-3ab)=(a^2-3b)/a(a^2-3b)=1/a
6)(3x^2+15xy)/(x+5y)=3x(x+5y)/x+5y=3x
Объяснение:
ответ: 1) (3a+12b)/6ab= 3(a+4b)/6ab=(a+4b)/2ab=a/2ab+4b/2ab=
1/2b+2/a
2) (15b-20c)/10b=5(3b-4c)/10b=(3b-4c)/2b=3/2-2c/b
3) (2a-4)/3(a-2)=2(a-2)/3(a-2)=2/3
4)5x(y+2)/6y+12=5x(y+2)/6(y+2)=5x/6
5)(a^2-3b)/(a^3-3ab)=(a^2-3b)/a(a^2-3b)=1/a
6)(3x^2+15xy)/(x+5y)=3x(x+5y)/x+5y=3x
Объяснение: