( 9 * 8 -12 *5*12) * ( 1+ 2+3+4+5)
dau sao la dau nhan
DY
Những câu hỏi liên quan
1/4 + 3/8 +5/16 =
3/5 - 1/3 - 1/6 =
4/7 * 5/8 * 7/12=
25/28 : 15/14 * 6/7 =
nhung dau * minh viet nay co nghia la dau nhan
\(\frac{1}{4}+\frac{3}{8}+\frac{5}{16}=\frac{5}{8}+\frac{5}{16}=\frac{15}{16}\)
\(\frac{3}{5}-\frac{1}{3}-\frac{1}{6}=\frac{4}{15}-\frac{1}{6}=\frac{1}{10}\)
\(\frac{4}{7}\cdot\frac{5}{8}\cdot\frac{7}{12}=\frac{4.5.7}{7.8.12}=\frac{140}{672}=\frac{5}{24}\)
\(\frac{25}{28}:\frac{15}{14}\cdot\frac{6}{7}=\frac{5}{6}\cdot\frac{6}{7}=\frac{5}{7}\)
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\(\frac{1}{4}+\frac{3}{8}+\frac{5}{16}=\frac{15}{16}\)
\(\frac{3}{5}-\frac{1}{3}-\frac{1}{6}=\frac{1}{10}\)
\(\frac{4}{7}\times\frac{5}{8}\times\frac{7}{12}=\frac{5}{24}\)
\(\frac{25}{28}:\frac{15}{14}\times\frac{6}{7}=\frac{5}{7}\)
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TINH BANG CACH NHANH NHAT
2*6*11/33*24
21*45/9*7*5*3
DAU SAO LA DAU NHAN NHE.
CON DAU GACH LA GACH PHAN SO NHE.
\(\frac{2x6x11}{33x24}\) = \(\frac{12x11}{33x24}\) = 12 x 11 / 333 x 242 = \(\frac{1}{6}\)
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(2016!+2017!):2016!3+7+11+...+2019(12!-13!+14!):(10.13.17)(2+9+16+23+...+659)
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nay dau cham o hai cau 2 va 3 la dau cham binh thuong con dau cham o hai cau 1 va 3 la dau nhan
Xin loi nhe may nha minh khong go dau duoc T.T
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1 * 2 * 3 *4 phan 5 * 6 * 7 * 8
moi nguoi oi giup mk nha
mk can gap
dau * la dau nhan nhe
\(\frac{1\times2\times3\times4}{5\times6\times7\times8}\)
\(=\frac{1\times2\times3\times4}{5\times2\times3\times7\times4\times2}\)
\(=\frac{1}{5\times7\times2}\)
\(=\frac{1}{70}\)
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\(\frac{1\times2\times3\times4}{5\times6\times7\times8}=\frac{6\times4}{6\times5\times7\times4\times2}=\frac{1}{5\times7\times2}=\frac{1}{70}\)
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tính giá trị biểu thức sau bằng cách thuận tiện nhất:
a) 5/11 + 1/4 + 2/5 + 3/4 + 6/25 + 9/25 + 6/11
b) 19/4 + 37/100 + 1/8 + 1/2 + 163/100 + 3/8
c) 1313/2121 * 165165/143143 * 424242/151515
d) 1995/1996 * 19961996/19931993 * 199319931993/199519951995
dau * la dau nhan nha.
minh can gap
1/7=8/-x
3x/9=2/6
4/2/5:(-33/10)+x=-1/5/6
(x-2/1/4):(-5/6)=3
-8:(4/1/5x+3/10)=4/4/9
(5,5x-44):(-3/2)=30
(13/10x-15).(-5/14)=3
1/3.(x+5/2)=-2
chu y dau( //)la so tap phan con dau( /) la phan so
\(\frac{4}{\frac{2}{5}}:\left(-\frac{33}{10}\right)+x=-\frac{1}{\frac{5}{6}}\)
\(10:\left(-\frac{33}{10}\right)+x=-\frac{6}{5}\)
\(-\frac{100}{33}+x=-\frac{6}{5}\)
\(x=\frac{302}{165}\)
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(X-5)^2.(x-5)=-3.9 de bai tim x . Dau ^2 la mu 2 . Dau Cham la dau nhan
Tinh
1+2–3–415+6–7–8+....–499–500+501+502
27.36+73.99+27.14 (dau cham la dau nhan nha)
165–[2.(30+5–26).(24÷2)]+32.20
8/9-1/3x(day la dau it k phai nhan)1/2=