Question

2/3 +2/7 -1/14 /-1- 3/7 +3/28 =

Answer 1

\(\frac{2}{3}+\frac{2}{7}-\frac{1}{14}-1-\frac{1}{37}+\frac{3}{28}=\left(\frac{2}{7}-\frac{1}{14}+\frac{3}{28}\right)+\left(\frac{2}{3}-1\right)-\frac{1}{37}\)

\(=\left(\frac{8}{28}-\frac{2}{28}+\frac{3}{28}\right)+-\frac{1}{3}-\frac{1}{37}\)

\(=\frac{9}{28}+-\frac{1}{3}-\frac{3}{7}=\left(\frac{9}{28}-\frac{3}{7}\right)+-\frac{1}{3}=\left(\frac{9}{28}+-\frac{12}{28}\right)+-\frac{1}{3}=-\frac{3}{28}+-\frac{1}{3}=-\frac{37}{84}\)

Chúc bạn học tốt!^_^

Answer 2

/ là dấu gạch phân số 

hãy trả lời giúp tôi