giup nha
(x-1va1/2)^2019=1/25(x-1va1/2)^2017
giup minh tra loi cau nay nha
x/2+x/3+x/4-0.6=-1va1/2
tinh gia tri bieu thuc
3/4 x 8,4 +2,8 x 1va1/2
1va1/2 la hon so nha
\(\frac{3}{4}\)x 8,4 + 2,8 x \(1\frac{1}{2}\)
= 0,75 x 8,4 + 2,8 x \(\frac{3}{2}\)
= 0,75 x 8,4 + 2,8 x 1,5
= 6,3 + 4,2
= 10,5
\(\frac{3}{4}\times8,4+2,8\times1\frac{1}{2}\)
\(=6,3+4,2\)
\(=10,5\)
Kết bạn với mình nha!
cam on cac cau nha
thanks you very much
Tim so tu nhien x biet1va1/5 nhan 1va1/6 nhan 1va1/7....nhan 1va1/2014
X=6/5x7/6x8/7x...x2015/2014
X=6x7x8x...x2015/5x6x7x...x2014
X=2015/5=403
K nhé các bạn ơi.
2/3 * X : 1/5 = 1va1/3 :1/4
\(\frac{2}{3}\cdot x:\frac{1}{5}=1\frac{1}{3}:\frac{1}{4}\)
\(\Leftrightarrow\frac{2}{3}\cdot x:\frac{1}{5}=\frac{16}{3}\)
\(\Rightarrow\frac{2}{3}\cdot x=\frac{16}{3}\cdot\frac{1}{5}\)
\(\Rightarrow x=\frac{16}{15}:\frac{2}{3}\)
\(\Rightarrow x=\frac{8}{5}\)
Ta có :
\(\frac{2}{3}x:\frac{1}{5}=1\frac{1}{3}:\frac{1}{4}\)
\(\frac{2}{3}x:\frac{1}{5}=\frac{1}{3}:\frac{1}{4}\)
\(2x:\frac{1}{5}=\frac{4}{3}\)
\(2x=\frac{4}{3}.\frac{1}{5}\)
\(2x=\frac{4}{15}\)
\(x=\frac{4}{15}:2\)
\(\Rightarrow x=\frac{2}{15}\)
tim so tu nhien x biet 1va1/5 x 1va1/6.......x1va1/2014
13va1/3 chia 1va1/3=26 chia (2 x - 1)
x - 5/6 : 1va1/6 = 0,125
1va1/6 la hon so
\(x-\frac{5}{6}:1\frac{1}{6}=0,125\)
\(x-\frac{5}{6}:\frac{7}{6}=0,125\)
\(x-\frac{5}{7}=0,125\)
\(x=0,125+\frac{5}{7}\)
\(x=\frac{47}{56}\)
1va1\3nhan 1va1\3nhan 1va14 nhan1va1\5 1va1\5 nhan1va1\6nhan1va1\7nhan1va1\8
minh khong hieu ban giai thich cho minh di
tim x
5/6x−3/4=−1/4+2/3
−1va1/2−2/3x=5/6−(−2/5)
(4/5:x+1,5):2/3=−1,5
4/3x−2/3=1/4−x
giup minh nhe minh dang can gap