(1/3 - 2/3 .x)2 5/9 = 20220
Những câu hỏi liên quan
\(\left(\dfrac{1}{3}x-\dfrac{2}{3}\right)\)2 + \(\dfrac{5}{9}\) = 0=20220
1.Thực hiện các phép tính
a)15+4.12-32
b){[37+13):5]ư-45:5}.7-20220
2.tìm x biết
a)13 x + 3=16
b)2x-138=24:23
Giúp tớ tớ đang cần gấp aa
Bài 1
a) 15 + 4.12 - 3²
=15 + 48 - 9
= 63 - 9
= 54
b) {[(37 + 13) : 5].2 - 45 : 5}.7 - 2022⁰
= [(50 : 5).2 - 9].7 - 1
= (10.2 - 9).7 - 1
= (20 - 9).7 - 1
= 11.7 - 1
= 77 - 1
= 76
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Bài 2
a) 13x + 3 = 16
13x = 16 - 3
13x = 13
x = 13 : 13
x = 1
b) 2x - 138 = 2⁴ : 2³
2x = 2 + 138
2x = 140
x = 140 : 2
x = 70
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32 .5 [7:12022 - (11-9)2] + 20220
Mình cần gấp ạ
\(3^2\cdot5\left[7:1^{2022}-\left(11-9\right)^2\right]+2022^0\)
\(=9\cdot5\cdot\left(7:1-2^2\right)+1\)
\(=9\cdot5\cdot\left(7-4\right)+1\)
\(=45\cdot3+1\)
\(=135+1\)
\(=136\)
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[36 x 4 - 4 (82 - 7.11)2] : 4 - 20220
\(\left[36\times4-4\times\left(82-7\times11\right)^2\right]:4-2022^0\\ =\left[144-4\times\left(82-77\right)^2\right]:4-1\\ =\left[144-4\times5^2\right]:4-1\\ =\left[144-4\times25\right]:4-1\\ =\left[144-100\right]:4-1\\ =44:4-1=11-1=10\)
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a,( - 150): (- 5) - 2. 52
b, 2040 - [10. (43- 46) :18 + 23 ]. 20220
a: \(\left(-150\right):\left(-5\right)-2\cdot5^2\)
\(=\dfrac{150}{5}-2\cdot25\)
=30-50
=-20
b: \(2040-\left[10\cdot\left(4^3-46\right):18+2^3\right]\cdot2022^0\)
\(=2040-\left[10\cdot\left(64-46\right):18+8\right]\)
\(=2040-\left[10\cdot18:18+8\right]\)
\(=2040-10-8=2030-8=2022\)
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Bài 1:thực hiện phép tính(hợp lí nếu có thể):1, -5/12 x 2/11 + -5/12 x 9/11 + 5/122, -3/5 : 7/5 - 3/5 : 7/5 + 2 3/53, 1/2+ 3/4 - ( 3/4 - 4/5)4, 2/3 + 1/3 x ( -4/9 + 5/6)5, -3/7 x 5/9 + 4/9 x -3/7 + ( - 2022) ^ 06,0,75 - ( 2 1/3 + 0,75) + 3 ^ 2 x ( -1/9)7, 2 6/7 x [(-7/5 - 3/2 : -5/-4) + ( 3/2)^2]8,2/7 + 5/7 x ( 3/5 - 0,25 ) x ( -2)^2 + 35%9, 1 13/15 x 0,75 - ( 11/20 + 25%): 1 2/510, ( -2,4 + 1/3 ) : 3 1/10 + 75% : 1 1/211.5/3 - 5/7 + 5/9 / 10/3 - 10/7 + 10/9
Đọc tiếp
Bài 1:thực hiện phép tính(hợp lí nếu có thể):
1, -5/12 x 2/11 + -5/12 x 9/11 + 5/12
2, -3/5 : 7/5 - 3/5 : 7/5 + 2 3/5
3, 1/2+ 3/4 - ( 3/4 - 4/5)
4, 2/3 + 1/3 x ( -4/9 + 5/6)
5, -3/7 x 5/9 + 4/9 x -3/7 + ( - 2022) ^ 0
6,0,75 - ( 2 1/3 + 0,75) + 3 ^ 2 x ( -1/9)
7, 2 6/7 x [(-7/5 - 3/2 : -5/-4) + ( 3/2)^2]
8,2/7 + 5/7 x ( 3/5 - 0,25 ) x ( -2)^2 + 35%
9, 1 13/15 x 0,75 - ( 11/20 + 25%): 1 2/5
10, ( -2,4 + 1/3 ) : 3 1/10 + 75% : 1 1/2
11.5/3 - 5/7 + 5/9 / 10/3 - 10/7 + 10/9
Xem thêm câu trả lời
Tính :
a) 13/15 + 4/7 - 101/105 b) 2/5 + 3/5 + x 4/9 c) 3/4 x 5/2 x 7/6
d) 1/2 : 1/4 - 2/9 e) 2/3 - 1/4 +2/9 g) 5/2 + 1/3 x 3/2
a: =91/105+60/105-101/105
=50/105=10/21
c: \(\dfrac{3}{4}\cdot\dfrac{5}{2}\cdot\dfrac{7}{6}=\dfrac{3}{6}\cdot\dfrac{7}{2}\cdot\dfrac{5}{4}=\dfrac{1}{2}\cdot\dfrac{7}{2}\cdot\dfrac{5}{4}=\dfrac{35}{16}\)
d: =2-2/9
=18/9-2/9
=16/9
e: =24/36-9/36+8/36
=23/36
g: =5/2+1/2
=3
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1) x +1/2 =5/3. 2) 3/5 - x =1/3. 3) 3/4 + x =7/2
4) x - 4/3 =7/9. 5)x - 5/6 = 7/3. 6)x- 1/5 =9/10
`@` `\text {Ans}`
`\downarrow`
`1)`
\(x+\dfrac{1}{2}=\dfrac{5}{3}\)
`\Rightarrow` \(x=\dfrac{5}{3}-\dfrac{1}{2}\)
`\Rightarrow`\(x=\dfrac{7}{6}\)
Vậy, `x =`\(\dfrac{7}{6}\)
`2)`
\(\dfrac{3}{5}-x=\dfrac{1}{3}\)
`\Rightarrow`\(x=\dfrac{3}{5}-\dfrac{1}{3}\)
`\Rightarrow`\(x=\dfrac{4}{15}\)
Vậy, `x =`\(\dfrac{4}{15}\)
`3)`
\(\dfrac{3}{4}+x=\dfrac{7}{2}\)
`\Rightarrow`\(x=\dfrac{7}{2}-\dfrac{3}{4}\)
`\Rightarrow`\(x=\dfrac{11}{4}\)
Vậy, \(x=\dfrac{11}{4}\)
`4)`
\(x-\dfrac{4}{3}=\dfrac{7}{9}\)
`\Rightarrow`\(x=\dfrac{7}{9}+\dfrac{4}{3}\)
`\Rightarrow`\(x=\dfrac{19}{9}\)
Vậy, `x=`\(\dfrac{19}{9}\)
`5)`
\(x-\dfrac{5}{6}=\dfrac{7}{3}\)
`\Rightarrow`\(x=\dfrac{7}{3}+\dfrac{5}{6}\)
`\Rightarrow x =`\(\dfrac{19}{6}\)
Vậy, `x=`\(\dfrac{19}{6}\)
`6)`
\(x-\dfrac{1}{5}=\dfrac{9}{10}\)
`\Rightarrow x=`\(\dfrac{9}{10}+\dfrac{1}{5}\)
`\Rightarrow x=`\(\dfrac{11}{10}\)
Vậy, `x=`\(\dfrac{11}{10}\)
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tìm x 2*x+1/9=5/3 b 2/9*x+1/5*x=2/3-3/5