Question

7phần 12 trừ 2 phần 7 cộng 1 phần 12

các bạn nhớ giải cách làm cho mình !!!

mình cảm ơn các bạn

Answer 1

\(\frac{7}{12}-\frac{2}{7}+\frac{1}{12}\)

\(=\left(\frac{7}{12}+\frac{1}{12}\right)-\frac{2}{7}\)

\(=\frac{2}{3}-\frac{2}{7}\)

\(=\frac{8}{21}\)

~Học tốt~

Answer 2

7/12-2/7+1/12

=(7/12+1/12)-2/7

=2/3(rút gọn)-2/7

=8/21

k for me 

Answer 3

\(\frac{7}{12}-\frac{2}{7}+\frac{1}{12}\)

\(=\left(\frac{7}{12}+\frac{1}{12}\right)-\frac{2}{7}\)

\(=\frac{2}{3}-\frac{2}{7}\)

\(=\frac{8}{21}\)

Answer 4

\(\frac{7}{12}-\frac{2}{7}+\frac{1}{12}\)

\(=\left(\frac{7}{12}+\frac{1}{12}\right)-\frac{2}{7}\)

\(=\frac{2}{3}-\frac{2}{7}\)

\(=\frac{8}{21}\)

Study well ! >_<

Answer 5

\(\frac{7}{12}-\frac{2}{7}+\frac{1}{12}\)

\(=\left(\frac{7}{12}+\frac{1}{12}\right)-\frac{2}{7}\)\(\)

\(=\frac{2}{3}-\frac{2}{7}\)

\(=\frac{14}{21}-\frac{6}{21}\)

\(=\frac{8}{21}\)

Answer 6

      \(\)\(\frac{7}{12}-\frac{2}{7}+\frac{1}{12}\)

\(=\)\(\left(\frac{7}{12}+\frac{1}{12}\right)-\frac{2}{7}\)

\(=\)\(\frac{2}{3}-\frac{2}{7}\)

\(=\)\(\frac{8}{21}\)

chúc bạn hok tốt