Question

 X : 8/9 = 1 và 3/7 hỏi x = ?

X - 1 và 1/4 =2 và 1/8 hỏi x = ?

X x1 và 1/3 = 2 và 3/5

 

 

giúp với . gấp lám rồi

Answer 1

\(x:\frac{8}{9}=1\frac{3}{7}\)

\(x:\frac{8}{9}=\frac{10}{7}\)

\(x=\frac{10}{7}.\frac{8}{9}\)

\(x=\frac{80}{63}\)

\(x-1\frac{1}{4}=2\frac{1}{8}\)

\(x-\frac{5}{4}=\frac{17}{8}\)

\(x=\frac{17}{8}+\frac{5}{4}\)

\(x=\frac{17}{8}+\frac{10}{8}\)

\(x=\frac{27}{8}\)

Answer 2

\(x:\frac{8}{9}=1\frac{3}{7}\)

\(x:\frac{8}{9}=\frac{10}{7}\)

\(x=\frac{10}{7}\times\frac{8}{9}\)

\(x=\frac{80}{63}\)

#Y/n

Answer 3

\(x-1\frac{1}{4}=2\frac{1}{8}\)

\(x-\frac{5}{4}=\frac{17}{8}\)

\(x=\frac{17}{8}+\frac{5}{4}\)

\(x=\frac{27}{8}\)

#Y/n

Answer 4

\(x.1\frac{1}{3}=2\frac{3}{5}\)

\(x.\frac{4}{3}=\frac{13}{5}\)

\(x=\frac{13}{5}:\frac{4}{3}\)

\(x=\frac{13}{5}.\frac{3}{4}\)

\(x=\frac{39}{20}\)

Answer 5

\(x\times1\frac{1}{3}=2\frac{3}{5}\)

\(x\times\frac{4}{3}=\frac{13}{5}\)

\(x=\frac{13}{5}:\frac{4}{3}\)

\(x=\frac{39}{20}\)

#Y/n