\(\frac{15}{34}+\frac{7}{21}+\frac{19}{34}-\frac{20}{15}+\frac{3}{7}\)
\(=\left(\frac{15}{34}+\frac{19}{34}\right)+\left(\frac{7}{21}-\frac{20}{15}\right)+\frac{3}{7}\)
\(=1+1+\frac{3}{7}=2\frac{3}{7}=\frac{17}{7}\)
20/34 + 7/21 + 19/34 - 20/15 + 3/7=?
15 phần 34 + 7 phần 21 +19 phần 34 - 20 phần 15 +3 phần 7 = ?
19 /34 + 7/21 + 15/34 - 20/15 +3/7 = ?
\(\frac{15}{34}+\frac{7}{21}+\frac{19}{34}-\frac{20}{15}+\frac{1}{6}\)
\(\dfrac{15}{34}-\dfrac{7}{21}+\dfrac{19}{34}-\dfrac{15}{17}-\dfrac{2}{3}\)
Giúp mình với mà đúng mới like nhé
A/ 15/34+7/21+19/37-20/15+3/7
B/ 3/8.27/1/5-51/1/5.3/8+19
C/ -2/7.21/8.-7/2
Bài 1: Thực hiện phép tính a) \(\frac{15}{34}+\frac{7}{21}+\frac{19}{34}-1\frac{7}{21}+2\)
a,\(\frac{15}{34}\)+\(\frac{7}{21}\)+\(\frac{19}{34}\)-\(\frac{36}{21}\)+\(\frac{2}{3}\)
