\(\frac{453}{434}\) + \(\frac{35653}{4564}\) x \(\frac{4536}{435636}\)=bao nhieu
\(\frac{653}{434\sqrt[64]{65}}\)+ \(\frac{585}{4645}\)- 474748= bao nhieu
Tìm x
a/ (X + \(\frac{5}{3}\)) x \(\frac{9}{13}\)= \(\frac{2}{3}\)
b/ 43770 : X = 560 - 434
c/ x : 3\(\frac{1}{3}=2\frac{2}{5}+\frac{7}{10}\)
a) \(\left(x+\frac{5}{3}\right)\cdot\frac{9}{13}=\frac{2}{3}\)
\(x+\frac{5}{3}=\frac{2}{3}:\frac{9}{13}\)
\(x+\frac{5}{13}=\frac{26}{27}\)
\(x=\frac{5}{13}-\frac{26}{27}\)
\(x=\frac{-203}{351}\)
b) \(43770:x=560-434\)
\(43770:x=126\)
\(x=43770:126\)
\(x=\frac{7295}{21}\)
c) \(x:3\frac{1}{3}=2\frac{2}{5}+\frac{7}{10}\)
\(x:\frac{10}{3}=\frac{12}{5}+\frac{7}{10}\)
\(x:\frac{10}{3}=\frac{31}{10}\)
\(x=\frac{31}{10}\cdot\frac{10}{3}\)
\(x=\frac{31}{3}\)
Tính:\(\frac{1}{5}+\frac{999}{2}+\frac{43}{453}\)
\(\frac{1}{5}+\frac{999}{2}+\frac{43}{453}\)
\(=\frac{2}{10}+\frac{4995}{10}+\frac{43}{453}\)
\(=\frac{4997}{10}+\frac{43}{453}\)
\(=\frac{2263641}{4530}+\frac{430}{4530}\)
\(=\frac{2264071}{4530}\)
~Study well~
#Bạch_Dương_Chi#
Tìm x
a/(x + \(\frac{5}{3}\)) x \(\frac{9}{13}\)= \(\frac{2}{3}\)
b/ 43770 : x = 560-434
c/x : 3\(\frac{1}{3}\)= 2\(\frac{2}{5}\)+ \(\frac{7}{10}\)
\(a,\left(x+\frac{5}{3}\right)\times\frac{9}{13}=\frac{2}{3}\\ \Rightarrow x+\frac{5}{3}=\frac{26}{27}\\ \Rightarrow x=-\frac{19}{27}\)\(b,43770\div x=560-434\\ \Rightarrow43770\div x=126\\ \Rightarrow x=\frac{7295}{21}\)\(c,x\div3\frac{1}{3}=2\frac{2}{5}+\frac{7}{10}\\ x\div3\frac{1}{3}=\frac{31}{10}\\ x=\frac{31}{3}\)
phép tính cuối đâu bạn
sao chỉ có kết quả
a, (x+\(\frac{5}{3}\)) x \(\frac{9}{13}\) = \(\frac{2}{3}\)
x+\(\frac{5}{3}\) =\(\frac{2}{3}\): \(\frac{9}{13}\)
x+\(\frac{5}{3}\) = \(\frac{26}{27}\)
x =\(\frac{26}{27}\)- \(\frac{5}{3}\)
x =
x + 453 - 13440 : 14 = 964
x - 37 × 11 = 154 × 203
4 - x × \(\frac{1}{2}\)= \(\frac{1}{6}\)
\(\frac{1}{3}\)+ x = \(\frac{3}{2}\)× 3
Cho \(A=\frac{455}{1}+\frac{454}{2}+\frac{453}{3}+...+\frac{2}{454}+\frac{1}{455}.\) So sánh A với 2007
A=455/1+454/2+453/3+...+1/455
A=(1+454/2)+(1+453/3)+...+(1+1/455)+1
A=456/2+456/3+456/4+...+456/455+456/456
A=456(1/2+1/3+1/4+...+1/456)<2007
Vay A<2007
nho k cho minh voi nhe
cho A=\(\frac{455}{1}+\frac{454}{2}+\frac{453}{3}+......+\frac{2}{454}+\frac{1}{455}\)
CMR:A>2053
CHO:A=\(\frac{455}{1}+\frac{454}{2}+\frac{453}{3}+...+\frac{1}{455}\)
chứng minh rằng :A>2007
Cho A = 457 / 1 + 456 / 2 + 455 / 3 +454 / 4 + ... + 1 / 457 . Chứng minh A > 2016 bài này giải thế nào các bác
\(\frac{1}{8}\)/\(\frac{1}{9}\)*\(\frac{2}{7}\)bang bao nhieu?
\(\frac{3}{5}\)-\(\frac{1}{3}\)+\(\frac{3}{5}\)+\(\frac{1}{3}\)bang bao nhieu ?
\(\frac{7}{15}\)+\(\frac{2}{5}\)*\(\frac{3}{5}\)bang bao nhieu ?
\(\frac{4}{9}\)/\(\frac{2}{5}\)-\(\frac{1}{3}\)bang bao nhieu ?