Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(G=\dfrac{9}{8}+\dfrac{23}{24}+\dfrac{1}{8}+\dfrac{17}{24}+\dfrac{13}{8}+\dfrac{19}{24}\\ \Rightarrow G=\left(\dfrac{9}{8}+\dfrac{1}{8}+\dfrac{13}{8}\right)+\left(\dfrac{23}{24}+\dfrac{17}{24}+\dfrac{19}{24}\right)\\ \Rightarrow G=\dfrac{23}{8}+\dfrac{59}{24}\\ \Rightarrow G=\dfrac{69}{24}+\dfrac{59}{24}\\ \Rightarrow G=\dfrac{128}{24}\\ \Rightarrow G=\dfrac{16}{3}\)
\(=\left(\dfrac{9}{8}+\dfrac{1}{8}+\dfrac{13}{8}\right)+\left(\dfrac{23}{24}+\dfrac{17}{24}+\dfrac{19}{24}\right)\)
\(=\dfrac{23}{8}+\dfrac{59}{24}\)
\(=\dfrac{16}{3}\)
\(a)\frac{11}{8}-\frac{7}{8}+\frac{3}{4}=\frac{4}{8}+\frac{3}{4}=\frac{2}{4}+\frac{3}{4}=\frac{5}{4}\)
\(b)\frac{24}{8}-\frac{5}{8}-3=(\frac{24}{8}-3)-\frac{5}{8}=3-3-\frac{5}{8}=-\frac{5}{8}\)
\(c)\)Tự làm
\(d)56\cdot78+8634=4368+8634=13002\)
Lời giải:
a.
$\frac{5}{15}-\frac{1}{6}\times \frac{2}{5}=\frac{5}{15}-\frac{1}{15}=\frac{4}{15}$
b.
$\frac{8}{24}+\frac{3}{4}:\frac{1}{8}=\frac{1}{3}+6=\frac{19}{3}$
c.
$\frac{1}{7}: \frac{2}{8}-\frac{1}{7}=\frac{1}{7}\times 4-\frac{1}{7}$
$=\frac{1}{7}\times (4-1)=\frac{1}{7}\times 3=\frac{3}{7}$
\(a,\frac{1}{2}\times\frac{4}{5}\div\frac{6}{10}\)
\(=\frac{2}{5}\div\frac{6}{10}\)
\(=\frac{2}{5}\times\frac{10}{6}\)
\(=\frac{2}{3}\)
\(b,\frac{24}{35}\div\left(\frac{4}{5}\times\frac{8}{7}\right)\)
\(=\frac{24}{35}\div\frac{32}{35}\)
\(=\frac{24}{35}\times\frac{35}{32}\)
\(=\frac{3}{4}\)
a,\(2-\frac{5}{7}+\frac{9}{21}\)
\(=2-\frac{154}{147}\)
\(=\frac{135}{147}\)
b, \(\frac{5}{8}\):\(3+\frac{25}{24}\)
\(=\frac{5}{24}+\frac{25}{24}\)
\(=\frac{30}{24}\)
\(G=\dfrac{7}{8}+\dfrac{11}{24}+\dfrac{5}{8}+\dfrac{23}{24}+\dfrac{11}{8}+\dfrac{13}{24}\\ \Rightarrow G=\left(\dfrac{7}{8}+\dfrac{5}{8}+\dfrac{11}{8}\right)+\left(\dfrac{11}{24}+\dfrac{23}{24}+\dfrac{13}{24}\right)\\ \Rightarrow G=\dfrac{23}{8}+\dfrac{47}{24}\\ \Rightarrow G=\dfrac{69}{24}+\dfrac{47}{24}\\ \Rightarrow G=\dfrac{116}{24}\\ \Rightarrow G=\dfrac{29}{6}\)
hay quá mà mik còn quá nhiều