76/18 - X x 17/3 = 4/9
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Tìm x
76/18 - X x 17/3 = 4/9
tìm x
76/18 - X x 17/3 = 4/9
Tìm x
a. X - 24/8 = 8
b. 76/18 - X x 17/3 = 4/9
`a) x - 24/8 = 8`
`x = 8 + 24/8`
`x = 11`
`b) 76/18 - x × 17/3 = 4/9`
`x × 17/3 = 76/18 - 4/9`
`x × 17/3 = 34/9`
`x = 34/9 : 17/3`
`x = 2/3`
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a, X = 8 + 24/8
X = 11
b, X x 17/3 = 76/18 - 4/9
X x 17/3 = 34/9
X = 34/9 : 17/3
X = 2/3
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a ) 9/22 x 33/18 =
b ) 12/35: 36/25 =
c ) 19/17 : 76/51 =
ai dung nhanh thì ...biết rồi đấy
mẩu 9/10 x 5/6 =3x3x5/5x2x3x2 =3/4
a , Tính : 2 1/3 x 4/5 - 1/3 x 4/5 .
b , Tính nhanh : 24 x 17 + 18 x 76 + 4
a) 9/22 x 33/18 =
b) 12/35 : 36/25 =
c) 19/17 : 76/51 =
a) 9/22 x 33/18 =3/4
b) 12/35 : 36/25 = 5/21
c) 19/17 : 76/51 =3/4
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a) \(\frac{9}{22}\times\frac{33}{18}\)
\(=\frac{9}{22}\times\frac{11}{6}\)
\(=\frac{9\times11}{22\times6}=\frac{3}{4}\)
b) \(\frac{12}{35}:\frac{36}{25}=\frac{12}{35}\times\frac{25}{36}\)
\(=\frac{5}{21}\)
c) \(\frac{19}{17}:\frac{76}{51}=\frac{19}{17}\times\frac{51}{76}\)
\(=\frac{3}{4}\)
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\(a,\frac{9}{22}x\frac{33}{18}\)
\(=\frac{3.3.11.3}{11.2.3.3.2}\)
\(=\frac{3}{2.2}\)
\(=\frac{3}{4}\)
\(b,\frac{12}{35}:\frac{36}{25}\)
\(=\frac{12}{35}.\frac{25}{36}\)
\(=\frac{12.25}{35.36}\)
\(=\frac{12.5.5}{5.7.12.3}\)
\(=\frac{5}{7.3}\)
\(=\frac{5}{21}\)
\(c,\frac{19}{17}:\frac{76}{51}\)
\(=\frac{19}{17}.\frac{51}{76}\)
\(=\frac{19.51}{17.76}\)
\(=\frac{19.17.3}{17.19.4}\)
\(=\frac{3}{4}\)
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Xem thêm câu trả lời
1) 168 - ( 18 - 2x ) x 12 = 120
2) [ 75 + ( 16 - x ) ] x 2 = 156
3) 124 - 24 x ( 3x - 16 ) = 76
4) [ ( 10 - x ) x 2 + 5 ] : 3 - 2 = 3
5) [ 80 + ( 62 - x ) ] : 17 - 7 = 1
6) 65 - ( 5x - 70 ) : 2 = 50
7) 504 : 9 136 - 2x ) + 4 = 32
8) ( 13x - 28 ) x 15 - 5 x 23 = 320
Mình cần gấp ạ !!!
mẫu 9/22 x 5/6 = \(\frac{9x5}{10x6}\)= \(\frac{3x3x5}{5x2x3x2}\)= 3/4 ý là trên tử gạch số 3 ở giữa và số 5 giưới mẫu gạch số 5 và 3
a) 9/22 x 33/18 =?
b) 12/35 : 36/25 =?
c) 19/17 : 76/51 = ?
làm như mẫu nha
tính nhanh
25/37 x 18/29 + 18/29 x 12/37
31/85 x 11/19 + 31/85 x 12/19 - 42/19 x 31/85
c , 16/53 : 17/9 - 16/53 : 17/8
1/5 x 12/31 x 4/3 + 19/31 x 4/15
a) \(\dfrac{25}{37}\times\dfrac{18}{29}+\dfrac{18}{29}\times\dfrac{12}{37}\)
\(=\dfrac{18}{29}\times\left(\dfrac{25}{37}+\dfrac{12}{37}\right)\)
\(=\dfrac{18}{29}\times\dfrac{37}{37}\)
\(=\dfrac{18}{29}\times1\)
\(=\dfrac{18}{29}\)
b) \(\dfrac{31}{85}\times\dfrac{11}{19}+\dfrac{31}{85}\times\dfrac{12}{19}-\dfrac{42}{19}\times\dfrac{31}{85}\)
\(=\dfrac{31}{85}\times\left(\dfrac{11}{19}+\dfrac{12}{19}-\dfrac{42}{19}\right)\)
\(=\dfrac{31}{85}\times\dfrac{-19}{19}\)
\(=\dfrac{31}{85}\times-1\)
\(=-\dfrac{31}{85}\)
c) \(\dfrac{16}{53}:\dfrac{17}{9}-\dfrac{16}{53}:\dfrac{17}{8}\)
\(=\dfrac{16}{53}:\left(\dfrac{9}{17}-\dfrac{8}{17}\right)\)
\(=\dfrac{16}{53}:\dfrac{1}{17}\)
\(=\dfrac{16}{901}\)
c) \(\dfrac{1}{5}\times\dfrac{12}{31}\times\dfrac{4}{3}+\dfrac{19}{31}\times\dfrac{4}{15}\)
\(=\dfrac{4}{15}\times\dfrac{12}{31}+\dfrac{19}{31}\times\dfrac{4}{15}\)
\(=\dfrac{4}{15}\times\left(\dfrac{12}{31}+\dfrac{19}{31}\right)\)
\(=\dfrac{4}{15}\times\dfrac{31}{31}\)
\(=\dfrac{4}{15}\times1\)
\(=\dfrac{4}{15}\)
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a: =18/29*(25/37+12/37)
=18/29
b: =31/85(11/19+12/19-42/19)
=-31/85
c; =16/53(9/17+8/17)=16/53
d: =4/15(12/31+19/31)=4/15
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