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A,(4-2/4-1/2):3/2
= ( 16/4 - 2/4 - 2/4) : 3/2
= 3 : 3/2
= 3 x 2/3
= 2
B,(3-22/12+2/4):5/2
= ( 3 - 11/6 + 1/2) : 5/2
= ( 18/6 - 11/6 + 3/6) : 5/2
= 10/6 : 5/2
= 2/3
A,(4-2/4-1/2):3/2
= ( 16/4 - 2/4 - 2/4) : 3/2
= 3 : 3/2
= 3 x 2/3
= 2
B,(3-22/12+2/4):5/2
= ( 3 - 11/6 + 1/2) : 5/2
= ( 18/6 - 11/6 + 3/6) : 5/2
= 10/6 : 5/2
= 2/3
a: \(=\dfrac{3}{22}\cdot22\cdot\dfrac{3}{11}=3\cdot\dfrac{3}{11}=\dfrac{9}{11}\)
b: \(=\dfrac{5}{6}\cdot\dfrac{2}{5}=\dfrac{1}{3}\)
c: =17/21(3/5+2/5)=17/21
3/22 x 3/11 x 22=
c1:\(\frac{3\times3\times22}{22\times11}=\frac{9}{11}\) c2:\(\frac{9}{242}\times22=\frac{9}{11}\)
( 1/2 + 1/3 ) x 2/5=
c1:\(\frac{5}{6}\times\frac{2}{5}=\frac{1}{3}\) c2:\(\frac{1}{2}\times\frac{2}{5}+\frac{1}{3}\times\frac{2}{5}=\frac{1}{5}+\frac{2}{15}=\frac{1}{3}\)
a. \(x-\dfrac{3}{2}=\dfrac{5}{6}\)
\(x=\dfrac{5}{6}+\dfrac{3}{2}\)
\(x=\dfrac{14}{6}=\dfrac{7}{3}\)
a) 2/7 X x = 2/3
X = 2/3 : 2/7
X = 7/3
b) 2/5 : x = 1/3
X = 2/5 : 1/3
X = 6/5
c) x : 7/11 = 22
X = 22 x 7/11
X = 14
d) 1/2 : x = 5
X = 1/2 : 5
X = 1/10
a) \(\dfrac{2}{7}\times x=\dfrac{2}{3}\)
\(x=\dfrac{2}{3}\div\dfrac{2}{7}\)
\(x=\dfrac{7}{3}\)
b) \(\dfrac{2}{5}:x=\dfrac{1}{3}\)
\(x=\dfrac{2}{5}:\dfrac{1}{3}\)
\(x=\dfrac{6}{5}\)
c) \(x:\dfrac{7}{11}=22\)
\(x=22\times\dfrac{7}{11}\)
\(x=\dfrac{154}{11}\)
\(x=14\)
d) \(\dfrac{1}{2}:x=5\)
\(x=\dfrac{1}{2}:5\)
\(x=\dfrac{1}{10}\)
3/22 x 33/11 x 22= 3/22 x22 x 3=3 x 3=9
3/5 x 17/21 + 17/21 + 2/5= 17/21(3/5 + 2/5)= 17/21x 1=17/21
(1/2+1/3)2/5=1/2x2/5+1/3x2/5 =1/5+2/15=1/3
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