Bài 1: Thực hiện phép tínha, \(\dfrac{1}{6}\)+\(\dfrac{7}{3}\)-\(\dfrac{1}{2}\) b,(-1\(\dfrac{5}{8}\))+1,25:(1-\(\dfrac{9}{4}\)) c, \(\dfrac{-3}{8}\).\(\dfrac{2}{5}\)+\(\dfrac{-3}{8}\).\(\dfrac{14}{5}\) ...
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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,(\(\dfrac{1}{4}\)+\(\dfrac{11}{9}\)):\(\dfrac{34}{5}\)+(\(\dfrac{-2}{9}\)+\(\dfrac{29}{4}\)):\(\dfrac{34}{5}\)
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