a)
\(y=\frac{2^3.3^4}{2^2.3^2.5}=\frac{2^2.2.3^2.3^2}{2^2.3^2.5}=\frac{2.3^2}{5}=\frac{18}{5}\)
b)\(y=\frac{1989.1990+3978}{1992.1991-3984}=\frac{1989.1990+1989.2}{1992.1991-1992.2}=\frac{1989.1992}{1992.1989}=1\)(vì tử bằng mẫu)
rút gọn phân số\(\frac{1989.1990+3978}{1992.1991-3984}\)
Rút gọn phân số:
a)\(\frac{2.\left(-13\right).9.10}{\left(-3\right).4.\left(-5\right).26}\)
b)\(\frac{2^3.3^4}{2^2.3^2.5};\frac{2^4.5^2.11^2.7}{2^3.5^3.7^2.11}\)
c)\(\frac{121.75.130.169}{39.60.11.198}\)
d)\(\frac{1998.1990+3978}{1992.1991-3984}\)
Rút gọn phân số : \(\frac{1989.1990+3978}{1992.1991-3984}\)
rút gọn phân số:
a)\(\frac{315}{540}\)
b)\(\frac{25.13}{26.35}\)
c)\(\frac{6.9-2.17}{63.3-119}\)
d)\(\frac{1989.1990+3978}{1992.1991-3984}\)
Rút gọn phân số
a)\(\frac{121.75.130.169}{39.60.11.198}\)
b)\(\frac{1989.1990+3978}{1992.1991-3984}\)
c)\(\frac{135.350+135.550}{900.100+35.900}\)
d)\(\frac{243.650-243.350}{600.200+600.43}\)
Bài 1: Rút gọn p/s :
a,\(\frac{6.9-2.17}{63.3-119}\)
b,\(\frac{1989.1990+3978}{1992.1991-3984}\)
Giải đúng và chuẩn mk like cho!
1.Rut gon
a)\(\frac{374}{506}\)
b)\(\frac{9^{11}\cdot25^5\cdot8^7}{18^{112}\cdot625^3\cdot24^3}\)
c)\(\frac{2^{10}.3^{11}+2^{10}.3^{12}}{2^{10}.3^{11}+2^{10}.3^{13}}\)
d)\(\frac{1989.1990+3978}{1992.1991-3984}\)
1, Rút gọn
\(\frac{374}{506}\); \(\frac{3600-75}{8400-175}\); \(\frac{9^{14}.25^5.8^7}{18^{12}.625^3.24^3}\); \(\frac{2^{10}.3^{10}-2^{10}.3^9}{2^9.3^{10}}\)
2, Rút gọn 1 cách nhanh nhất
\(\frac{1989.1990+3978}{1992.1991-3984}\)
rút gọn phân số
1989.1990+3978
1992.1991-3984