Kết quả: -1285

                9

\(M=\frac{131.145+100}{45-132.145}\)

\(=\frac{131-\frac{100}{145}}{\frac{45}{145}-132}\)

\(=\frac{131-\frac{20}{29}}{\frac{9}{29}-132}\)

\(=\frac{131\frac{-20}{29}}{-132\frac{9}{29}}\)

\(\frac{131.145+100}{45-132.140}=\frac{132.145-45}{45-132.140}=-1\)

\(\frac{49^6.5-7^{11}}{\left(-7\right)^{10}.5+2.49^5}=\frac{7^{11}.7-7^{11}.1}{7^{10}.5+2.7^{10}}=\frac{7^{11}.\left(7-1\right)}{7^{10}.\left(5+2\right)}=\frac{7^{11}.6}{7^{11}}=6\)

a)

* Rút gọn : 21/56 = 3/8 ; 60/96 = 5/8

Vì 3 < 5 

=> 3/8 < 5/8 ( hay 21/56 < 60/96 )

Vậy 21/56 < 60/96

\(\text{a)}\)

\(\text{Ta có: }\text{ }\frac{21}{56}=\frac{21:7}{56:7}=\frac{3}{8}\text{ và }\frac{60}{96}=\frac{60:12}{96:12}=\frac{5}{8}\)

       \(\Rightarrow\frac{21}{56}< \frac{60}{96}\left(\frac{3}{8}< \frac{5}{8}\right)\)

\(\text{b)}\)

\(\text{Ta có: }\frac{75}{100}=\frac{75:25}{100:25}=\frac{3}{4}\text{ và }\frac{45}{36}=\frac{45:9}{36:9}=\frac{5}{4}\)    

       \(\Rightarrow\frac{75}{100}< \frac{45}{36}\left(\frac{3}{4}< \frac{5}{4}\right)\)

\(\text{# học tốt #}\)

thanks nha

SHDlUIWDHULyasgdyuWGEDDed

45/60 =3/4

15/36 = 5/12

105/75 = 7/5

72/100 = 18/25

45/60 = 3/4

15/36 = 5/12

105/75 = 7/5

72/100 = 18/25

45/60=3/4
15/36=5/12
105/75=7/5
72/100=18/25

\(\dfrac{24}{32}=\dfrac{24:8}{32:8}=\dfrac{3}{4}\)

\(\dfrac{45}{6}=\dfrac{45:3}{6:3}=\dfrac{15}{2}\)

\(\dfrac{75}{100}=\dfrac{75:25}{100:25}=\dfrac{3}{4}\)

\(\dfrac{27}{63}=\dfrac{27:9}{63:9}=\dfrac{3}{7}\)