Question

Bài 1: Thực hiện phép tính

a, \(\dfrac{1}{6}\)+\(\dfrac{7}{3}\)-\(\dfrac{1}{2}\)                                                   b,(-1\(\dfrac{5}{8}\))+1,25:(1-\(\dfrac{9}{4}\))                                                                                  c, \(\dfrac{-3}{8}\).\(\dfrac{2}{5}\)+\(\dfrac{-3}{8}\).\(\dfrac{14}{5}\)                                           d,(\(\dfrac{1}{4}\)+\(\dfrac{11}{9}\)):\(\dfrac{34}{5}\)+(\(\dfrac{-2}{9}\)+\(\dfrac{29}{4}\)):\(\dfrac{34}{5}\)

Answer 1

a: =1/6+14/6-3/6=12/6=2

b: =-13/8+5/4:(-5/4)

=-13/8-1=-21/8

c: =-3/8(2/5+14/5)

=-3/8*16/5

=-6/5

d: =5/34(1/4+11/9-2/9+29/4)

=5/34*(15/2+1)

=5/34*17/2
=5/4