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\(\frac{4}{3}+\frac{1}{3}:x=\frac{5}{2}\)
\(\frac{1}{3}:x=\frac{5}{2}-\frac{4}{3}\)
\(\frac{1}{3}:x=\frac{7}{6}\)
\(x=\frac{1}{3}:\frac{7}{6}\)
\(x=\frac{2}{7}\)
4/3 + 1/3 : x = 5/2
5/3 : x = 5/2
x = 5/2 x 5/3
x = 25/6
Ko chắc chắn
Hok tốt !
# MissyGirl #

Tìm \(x\):
a; \(x\) + 35,2 = [25,6 + 3,14] x 3
\(x+\) 35,2 = 28,74 x 3
\(x\) + 35,2 = 86,22
\(x\) = 86,22 - 35,2
\(x\) = 51,02
b; \(\frac{17}{5}\) : \(x\) = \(\frac{34}{5}\) : \(\frac43\)
\(\frac{17}{5}\) : \(x\) = \(\frac{34}{5}\) x \(\frac34\)
\(\frac{17}{5}\) : \(x\) = \(\) \(\frac{51}{10}\)
\(x\) = \(\frac{17}{5}\) : \(\frac{51}{10}\)
\(x\) = \(\frac{17}{5}\) x \(\frac{10}{51}\)
\(x\) = \(\frac23\)
c; [\(x\) - \(\frac12\)] x \(\frac53\) = \(\frac74\) - \(\frac12\)
[\(x\) - \(\frac12\)] x \(\frac53\) = \(\frac74-\frac24\)
[\(x-\frac12\)] x \(\frac53\) = \(\frac54\)
\(x-\frac12\) = \(\frac54\) : \(\frac53\)
\(x-\frac12\) = \(\frac54\) x \(\frac35\)
\(x\) - \(\frac12\) = \(\frac34\)
\(x=\frac34+\frac12\)
\(x=\frac34+\frac24\)
\(x=\) \(\frac54\)
d; [72 - 4 x \(x\)] : 9 = 4
72 - 4 x \(x\) = 4 x 9
72 - 4 x \(x\) = 36
4 x \(x\) = 72 - 36
4 x \(x\) = 36
\(x\) = 36 : 4
\(x\) = 9

a: \(=2.125+5.375+7.15+6.85+7.5\)
=7,5+14+7,5
=15+14=29
b: \(\Leftrightarrow\left(\dfrac{4}{5}\cdot\dfrac{5}{6}+\dfrac{1}{5}\cdot x\right)\cdot30=60\)
=>(2/3+1/5x)=2
=>1/5x=2-2/3=4/3
=>x=4/3*5=20/3

6 2/7 + 7 3/5 + 8 6/9 + 9 1/4 + 2/5 + 5/7 + 1/3 x 3/4 + 1967
= 44/7 + 38/5 + 78/9 + 37/4 + 2/5 + 5/7 + 1/3 + 1967
= ( 44/7 + 5/7 ) + ( 38/5 + 2/5 ) + ( 26/3 + 1/3 ) + ( 37/4 + 3/4 ) +1967
= 7 + 8 + 9 + 10 + 1967
= 15 + 9 + 10 + 1967
= 24 + 10 + 1967
= 34 + 1967
= 2001

a) \(x\times\frac{5}{7}=\frac{1}{4}+\frac{1}{5}\)
\(x\times\frac{5}{7}=\frac{9}{20}\)
\(x=\frac{9}{20}\div\frac{5}{7}\)
\(x=\frac{63}{100}\)
a(2) : \(2\frac{3}{3}\div x=\frac{2}{5}-\frac{1}{3}\)
\(\frac{9}{3}\div x=\frac{1}{15}\)
\(x=\frac{9}{3}\div\frac{1}{15}\)
\(x=45\)

x : 1/2 + 5/6 = 3/2
x : 1/2 = 2/3
x = 2/3 . 1/2
x = 1/3
hok tốt
\(\frac{3}{5}+\frac{2}{5}:x=\frac{4}{5}\)
\(=>\frac{2}{5}:x=\frac{4}{5}-\frac{3}{5}\)
\(=>\frac{2}{5}:x=\frac{1}{5}\)
\(=>x=\frac{2}{5}:\frac{1}{5}\)
\(=>x=2\)
Vậy x = 2
3/5 + 2/5 : x = 4/5
2/5 : x = 1/5
x = 1/2