Question

Tính:

A=(\(\frac{3}{10}\)+\(\frac{4}{5}\)x\(\frac{1}{2}\)) : (1\(\frac{8}{9}\)-1\(\frac{1}{3}\))

Answer 1

A = \(\left(\frac{3}{10}+\frac{4}{5}x\frac{1}{2}\right):\left(1\frac{8}{9}-1\frac{1}{3}\right)\)

= \(\left(\frac{3}{10}+\frac{4}{10}\right):\left(\frac{17}{9}-\frac{4}{3}\right)\)

=\(\frac{7}{10}:\left(\frac{17-12}{9}\right)\)

= \(\frac{7}{10}:\frac{5}{9}\)

= \(\frac{7}{10}x\frac{9}{5}\)

= \(\frac{63}{50}\)

Answer 2

\(A=\left(\frac{3}{10}+\frac{4}{5}\times\frac{1}{2}\right):\left(1\frac{8}{9}-1\frac{1}{3}\right)\)

\(\Rightarrow A=\left(\frac{3}{10}+\frac{2}{5}\right):\left(\frac{17}{9}-\frac{4}{3}\right)\)

\(\Rightarrow A=\frac{7}{10}:\frac{5}{9}\)

\(\Rightarrow A=\frac{63}{50}\)

tíc mình nha

Answer 3

=(3/10+4/10):(17/9-4/3)

=7/10:(17/9-12/9)

=7/10:5/9

=7/10x9/5=63/50

Answer 4

A = (\(\frac{3}{10}+\frac{4}{10}\)) : ( \(\frac{17}{9}-\frac{4}{3}_{ }\))

  =       \(\frac{7}{10}\)       :         \(\frac{5}{9}\)

=                     \(\frac{63}{50}\)