Question

\(\frac{4}{7}\) + \(\frac{1}{7}\).\(\frac{2}{3}\)-\(\frac{1}{7}\).\(\frac{5}{2}\)

câu hỏi này dễ ng trả lời đầu tiên:

+kb

+tick

Answer 1

\(\frac{4}{7}+\frac{1}{7}\times\frac{2}{3}-\frac{1}{7}\times\frac{5}{2}\)

\(=\frac{4}{7}+\frac{1}{7}\text{​​}\text{​​}\times\left(\frac{2}{3}-\frac{5}{2}\right)\)

\(=\frac{4}{7}+\frac{1}{7}\text{​​}\text{​​}\times\frac{-11}{6}\)

\(=\frac{4}{7}+\frac{-11}{42}\)

\(=\frac{13}{42}\)

_Chúc bạn học tốt

Answer 2

mục đích để kb

Answer 3

\(\frac{4}{7}+\frac{1}{7}\times\frac{2}{3}-\frac{1}{7}\times\frac{5}{2}\)

\(=\frac{4}{7}+\frac{1}{7}-\frac{1}{7}\times\left(\frac{2}{3}\times\frac{5}{2}\right)\)

\(=\frac{4}{7}\times\left(\frac{2}{3}\times\frac{5}{2}\right)\)

\(=\frac{4}{7}\times\frac{5}{3}\)

\(=\frac{20}{21}\)

Học tốt #

Answer 4

\(\frac{4}{7}+\frac{1}{7}.\frac{2}{3}-\frac{1}{7}.\frac{5}{2}\)

\(=\frac{4}{7}+\frac{2}{21}-\frac{5}{14}\)

\(=\left(\frac{4}{7}-\frac{5}{14}\right)+\frac{2}{21}\)

\(=\frac{3}{14}+\frac{2}{21}\)

\(=\frac{13}{42}\)

Answer 5

\(\frac{4}{7}+\frac{1}{7}.\frac{2}{3}\)\(-\frac{1}{7}.\frac{5}{2}\)

\(=4.\frac{1}{7}+\frac{1}{7}.\frac{2}{3}-\frac{1}{7}.\frac{5}{2}\)

\(=\frac{1}{7}\left(4+\frac{2}{3}-\frac{5}{2}\right)\)

\(=\frac{1}{7}.\frac{13}{6}\)

\(=\frac{13}{42}\)

Answer 6

4rrrrr

Answer 7

\(\frac{13}{42}\)