1,Tính a,15/12+5/13-(3/12+18/13)b,(-1/2+3/4)

Duong Duc Duong Hỏi từ APP VIETJACK

· 20:49 24/09/2023

1,Tính
a, $\frac{15}{12} + \frac{5}{13} - (\frac{3}{12} + \frac{18}{13})$
b,( $\frac{- 1}{2} + \frac{3}{4}$ )-( $\frac{- 4}{5} + \frac{5}{6}$ )
c,-( $\frac{3}{5} + \frac{3}{4}$ )-( $\frac{- 3}{4} + \frac{3}{5}$ )
d,-( $\frac{3}{7} + \frac{1}{2}$ )-( $\frac{3}{7} + \frac{4}{7}$ )
2,Thực hiện phép tính
a $\frac{3}{7} + \frac{1}{2} - \frac{17}{7} + \frac{3}{2}$
b, $\frac{15}{34} + \frac{1}{3} + \frac{15}{34} - \frac{4}{3} + \frac{3}{7}$
c,2và $\frac{3}{4} + \frac{4}{21} + \frac{1}{4} - \frac{1}{2} + \frac{17}{21}$
d, $\frac{1}{6}$ -( $\frac{1}{6} + \frac{9}{12}$ )