A = (7/19 + 12/9)- 8/11+ 7/19 :3/11
A = 1 - 8/11 + 7/19 : 3/11
A = 3/11 + 7/19 : 3/11
A = 1018/627
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Các câu hỏi tương tự
tính nhanh
7/11 . 8/19 + 7/19 . 3/11 - 12/19
A=\(\frac{7}{19}x\frac{8}{11}x\frac{7}{19}:\frac{3}{11}+\frac{12}{19}\)
A=\(\frac{7}{19}x\frac{8}{11}x\frac{7}{19}:\frac{3}{11}+\frac{12}{19}\)
tính
a, 7/-25 + -18/25 + 4/23 +5/7+19/23
b, 7/19 x 8 /11 + 7/19 x 3/11 + 12/19
c ,day la hon so nha: 8 2/7 -(3 4/7 + 4 2/7 )
d, -7/9 .3/11 + -7 /9.8/11 + 1 7/9
Tính hợp lí:
g) \(\dfrac{-3}{4}+\dfrac{2}{7}+\dfrac{-1}{4}+\dfrac{3}{5}+\dfrac{5}{7}\)
h) \(\dfrac{7}{19}.\dfrac{8}{11}+\dfrac{7}{19}.\dfrac{3}{11}-\dfrac{12}{19}\)
i) \(19\dfrac{5}{8}:\dfrac{7}{2013}-26\dfrac{5}{8}:\dfrac{7}{2013}\)
k) \(\dfrac{-5}{12}.\dfrac{2}{11}+\dfrac{-5}{12}.\dfrac{9}{11}+\dfrac{5}{12}\)
7/19 × 8/11 + 7/19× 3/11 +12/19
\(E = \frac{7}{19}. \frac{8}{11} + \frac{7}{19}. \frac{3}{11} + \frac{12}{19}\)
a,(-25) .125.4.(-8) .(-17)
b,-3\4+2\7+-1\4+3\5+5\7
c,7\19.8\11+7\19.3\11-12\19
d,19 5\8:7\2013-26 5\8:7\2013
e,-5\12.2\11+-5\12.9\11+5\12
1) Tính nhanh
a) 7/19. 8/11 + 7/19.3/11 + 12/19