Bài 1: A=0,7 . \(2\frac{2}{3}\). 20 . 0,375 . \(\frac{5}{28}\)B=( 9,75 .\(21\frac{3}{7}\) + \(\frac{39}{4}\). \(18\frac{4}{7}\)) Bài 2a)(x + \(\frac{1}{2}\)) . (\(\frac{2}{3}\)- 2x ) = 0b)\(\frac{2}{3}x-\frac{1}{2}x=\frac{5}{12}\)c) x...
Đọc tiếp
Bài 1:
A=0,7 . \(2\frac{2}{3}\). 20 . 0,375 . \(\frac{5}{28}\)
B=( 9,75 .\(21\frac{3}{7}\) + \(\frac{39}{4}\). \(18\frac{4}{7}\))
Bài 2
a)(x + \(\frac{1}{2}\)) . (\(\frac{2}{3}\)- 2x ) = 0
b)\(\frac{2}{3}x-\frac{1}{2}x=\frac{5}{12}\)
c) x .\(3\frac{1}{4}+\left(-\frac{7}{6}\right).x-1\frac{2}{3}=\frac{5}{12}\)
d)\(5\frac{8}{17}:x+\left(\frac{-4}{17}\right):x+3\frac{1}{7}:17\frac{1}{3}\)= \(\frac{4}{11}\)
