\(\frac{23}{6}:x-\frac{2}{5}=\frac{1}{4}\)

\(\frac{23}{6}:x=\frac{1}{4}+\frac{2}{5}\)

\(\frac{23}{6}:x=\frac{13}{20}\)

\(x=\frac{23}{6}:\frac{13}{20}\)

\(x=\frac{230}{39}\)

~ Thiên mã ~

\(\frac{23}{6}:x-\frac{2}{5}=\frac{1}{4}\)

\(\frac{23}{6}:x=\frac{1}{4}+\frac{2}{5}\)

\(\Rightarrow\frac{23}{6}:x=\frac{13}{20}\)

\(x=\frac{23}{6}:\frac{13}{20}\)

\(\Rightarrow x=\frac{230}{39}\)

a, \(y-\frac{1}{6}=\frac{5}{6}\)

\(y=\frac{5}{6}+\frac{1}{6}\)

\(y=1\)

b, 1295.23-16839

=29785-16839

=12946

_HT_

A) y= 1   

b) 12946

Để kết quả của phép tính trên là 0 thì :

                 \(\frac{32}{46}\)X x - \(\frac{16}{23}\)X \(\frac{21}{23}\)= 0

                 \(\frac{16}{23}\)X x - \(\frac{16}{23}\)X \(\frac{21}{23}\)= 0

                           \(\frac{16}{23}\)X ( x - \(\frac{21}{23}\)) = 0

                                             x - \(\frac{21}{23}\)= 0 (   chia cả 2 vế cho \(\frac{16}{23}\))

                                                          x = 0 + \(\frac{21}{23}\)

                                                          x = \(\frac{21}{23}\)

Vậy x = \(\frac{21}{23}\)

21/23 nhe

 \(\frac{112}{23}+\frac{345}{23}+\frac{145}{23}+\frac{666}{23}=\left(\frac{112}{23}+\frac{666}{23}\right)+\left(\frac{345}{23}+\frac{145}{23}\right)=\frac{778}{23}+\frac{490}{23}=\frac{1268}{23}\)

kết quả là 36/23 nhé

\(\frac{12}{23}+\frac{24}{23}\) = ?

Trả lời : \(\frac{12}{23}\)+ \(\frac{24}{23}\)= \(\frac{36}{23}\)

a, \(\frac{6}{7}.\frac{16}{15}.\frac{7}{6}.\frac{21}{32}=\frac{6}{7}.\frac{7}{6}.\frac{16}{15}.\frac{21}{32}\)=\(1.\frac{16}{15}.\frac{21}{32}=\frac{7}{5.2}=\frac{7}{10}\)

Phần b T²

c,\(\frac{7}{4}.\frac{11}{21}+\frac{11}{21}.\frac{5}{4}=\frac{11}{21}.\left(\frac{7}{4}+\frac{5}{4}\right)\)=\(\frac{11}{21}.3=\frac{11}{7}\)

cảm ơn bạn nha

Câu a: \(\frac{54}{63}\) và \(\frac{28}{63}\)

Câu b: \(\frac{55}{88}\)và \(\frac{24}{88}\)

a) \(\frac{6}{7}=\frac{6.9}{7.9}=\frac{54}{63}\)

\(\frac{4}{9}=\frac{4.7}{9.7}=\frac{28}{63}\)

b) \(\frac{5}{8}=\frac{5.11}{8.11}=\frac{55}{88}\)

\(\frac{3}{11}=\frac{3.8}{11.8}=\frac{24}{88}\)

c) \(\frac{6}{7}=\frac{6.3}{3.7}=\frac{18}{21}\)

\(\frac{5}{21}=\frac{5}{21}\)

d) \(\frac{7}{21}=\frac{7.4}{21.4}=\frac{28}{84}\)

=744 nha

873-23x5+98-672:6

=873-115+98-112

=758+98-112

=856-112

=744

77/23+23/23=100/23

Đáp số 100/23

\(\frac{77}{23}+\frac{23}{23}\)\(=\frac{77}{23}+1=\frac{100}{23}\)