\(\Leftrightarrow\dfrac{2}{3}x=\dfrac{1}{3}x\)
=>x=0
\(\Leftrightarrow\dfrac{2}{3}x=\dfrac{1}{3}x\)
=>x=0
tìm x:
x : 33 = \(\dfrac{9}{66}\) \(\dfrac{4}{5}\) x \(x\) = \(\dfrac{10}{11}\) :\(\dfrac{3}{4}\)
1. Tìm X, biết: x - \(\dfrac{2}{3}\) x ( X + 9 ) = 1
2. Tìm X, biết: X - \(\dfrac{11}{15}\) = \(\dfrac{3+X}{5}\)
tìm số tự nhiên x ,biết : \(\dfrac{1}{3}\) < \(\dfrac{x}{2}\) < \(\dfrac{2}{3}\)
1. Tính bằng cách thuận tiện nhất:
\(\dfrac{2}{5}x\dfrac{12}{3}+\dfrac{2}{5}x\dfrac{15}{3}+\dfrac{2}{5}\)
2. Tìm số tự nhiên a, biết: \(\dfrac{3}{4}< a< \dfrac{11}{4}\)
Bài 1:
a) Tính:
\(\dfrac{21x7x11}{33x4}\)= ...
b) Tìm x biết: \(\dfrac{3}{x}\)=\(\dfrac{9}{21}\)
Bài 2: Tính
a) \(\dfrac{8x3x4}{16x3}\)= ...
b)\(\dfrac{30x25x7x8}{75x8x12x14}\)= ...
Tìm x, biết:
a) x - 2 = \(\dfrac{7}{15}\)
b) \(\dfrac{9}{20}\) + x = \(\dfrac{2}{5}\) + \(\dfrac{3}{20}\)
Tìm \(x\), biết \(x\) + \(\dfrac{3}{2}\) = \(\dfrac{11}{12}\) + \(\dfrac{15}{24}\)
Tìm x:
a) x - \(\dfrac{5}{7}\) = \(\dfrac{3}{5}\) x \(\dfrac{1}{2}\) b) x \(x\dfrac{2}{3}=\dfrac{5}{8}+\dfrac{3}{4}\)
tìm số tự nhin x bt
a.\(x-\)\(\dfrac{5}{14}=\dfrac{3}{7}-\dfrac{1}{14}\) b.\(\dfrac{2}{9}:x=\dfrac{1}{2}+\dfrac{2}{3}\) c.\(\dfrac{6}{32:x}=\dfrac{12}{16}\)