1818 : (x-37)=18
Tìm x:
a/ 1818 : (6x - 37) = 18
b/ (x : 23 + 45) . 67 = 8911
a/ 1818 : (6x - 37) = 18
6x- 37 = 101
6x = 138
x= 23
b/ (x : 23 + 45) . 67 = 8911
x : 23 + 45 = 133
x: 23 = 88
x = 2024
a/ 1818 : ( 6x - 37 ) = 18
6x - 37 = 1818 : 18
6x - 37 = 101
6x = 101 + 37
6x = 138
x = 138 : 6
x = 23
b/ ( x : 23 + 45 ) . 67 = 8911
x : 23 + 45 = 8911 : 67
x : 23 + 45 = 133
x : 23 = 133 - 45
x : 23 = 88
x = 88 . 23
x = 2024
\(a,1818:\left(6x-37\right)=18\)
\(\Leftrightarrow6x-37=101\)
\(\Leftrightarrow6x=138\)
\(\Leftrightarrow x=23\)
Vây x = 23
b, \(\left(\frac{x}{23}+45\right).67=8911\)
\(\Leftrightarrow\frac{x}{23}+45=133\)
\(\Leftrightarrow\frac{x}{23}=88\)
\(\Leftrightarrow x=88.23=2024\)
Vậy x = 2024.
TÌm x biết rằng :
a/ 6.x - 37 = 1818 : 18 b/ x : 23 + 45 = 270
6.x - 37 = 1818 : 18 x : 23 + 45 = 270
6.x - 37 = 101 x : 23 = 270 - 45
6.x = 101 + 37 x : 23 = 225
6.x = 138 x = 225 x 23
x = 138 : 6 x = 5175
x = 23
a) \(6x-37=1818:18\)
\(\Rightarrow6x-37=101\)
\(\Rightarrow6x=101+37\)
\(\Rightarrow6x=138\)
\(\Rightarrow x=138:6=23\)
b) \(x:23+45=270\)
\(x:23=270-45\)
\(x:23=225\)
\(x=225\cdot23\)
\(x=5175\)
a) 6.x - 37 = 1818 : 18
6.x - 37 = 101
6.x = 101+ 37
6.x = 138
x = 138 : 6
x = 23
Tìm X biết:
1) X - 105 : 21 = 15
2) ( X - 105 ) : 21 = 15
3) ( 32 + X ) : 17 = X
4) 1818 : ( 6X - 37 ) = 18
1)\(x-105:21=15\)
\(x-5=15\)
\(x=15+5\)
\(x=20\)
Vậy \(x=20.\)
2)\(\left(x-105\right):21=15\)
\(\left(x-105\right)=15.21\)
\(x-105=315\)
\(x=315+105\)
\(x=420\)
Vậy \(x=412.\)
4)\(1818:\left(6x-37\right)=18\)
\(6x-37=1818:18\)
\(6x-37=101\)
\(6x=101+37\)
\(6x=138\)
\(x=138:6\)
\(x=23\)
Vậy \(x=23.\)
mk quên,còn phần 3) nữa:
3)\(\left(32+x\right):17=x\)
\(32+x=x.17\)
\(\Leftrightarrow x=2\)
Vậy \(x=2.\)
tim x thuoc N biet
10 + 2 . x = 4 .4.4.4.4 : 4.4.4
231 - ( x -6) = 1339 : 13
1818 : ( 6x - 37 ) = 18
21 + ( 25 - x) =50
( x + 13) :5=2
( 2600+6400) - 3x=1200
tìm x
(x+216):61+1=202
1818:(6x-37)+1=19
(x:23+45)x67+3=8914
a) ( x + 216 ) : 61 + 1 = 202
( x + 216 ) : 61 = 201
( x + 216 ) = 12261
x = 12045
b) 1818 : ( 6x - 37 ) + 1 = 19
1818 : ( 6x - 37 ) = 18
( 6x - 37 ) = 101
6x = 138
x = 23
c) ( x : 23 + 45 ) x 67 + 3 = 8914
( x : 23 + 45 ) x 67 = 8911
x : 23 + 45 = 133
x : 23 = 88
x = 2024
(x + 216) : 61 + 1 = 202
=> (x + 216) : 61 = 201
=> x + 216 = 12261
=> x = 12045
vậy_
1818 : (6x - 37) + 1 = 19
=> 1818 : (6x - 37) = 18
=> 6x - 37 = 101
=> 6x = 138
=> x = 23
vậy_
(x : 23 + 45) x 67 + 3 = 8914
=> (x : 23 + 45) x 67 = 8911
=> x : 23 + 45 = 133
=>x : 23 = 88
=> x = 2024
vậy_
\(a.\left(x+216\right):61+1=202.\)
\(\Leftrightarrow\left(x+216\right):6=201\)
\(\Leftrightarrow x+216=1206\)
\(\Rightarrow x=990\)
\(b.1818:\left(6x-37\right)+1=19.\)
\(\Leftrightarrow1818:\left(6x-37\right)=18\)
\(\Leftrightarrow6x-37=101\)
\(\Leftrightarrow6x=138\)
\(\Rightarrow x=23\)
\(c.\left(x:23+45\right)\times67+3=8914\)
\(\Leftrightarrow\left(x:23+45\right)\times67=8911\)
\(\Leftrightarrow x:23+45=133\)
\(\Leftrightarrow x:23=88\)
\(\Rightarrow x=2024\)
tìm x
(1900-2x):35-32=16
111+ 1818:(6x-37)=129
(x:3+45)x67-31=8880
(1900 - 2x) : 35 - 32 = 16
=> (1900 - 2x) : 35 = 48
=> 1900 - 2x = 1680
=> 2x = 220
=> x = 110
vậy_
111 + 1818 : (6x - 37) = 129
=> 1818 : (6x - 37) = 18
=> 6x - 37 = 101
=> 6x = 138
=> x = 23
vậy_
(x : 3 + 45) x 67 - 31 = 8880
=> (x : 3 + 45) x 67 = 8911
=> x : 3 + 45 = 133
=> x : 3 + = 88
=>x = 264
vậy_
Tính nhanh : 18/15 x { 2525/3636 + 1515/1818 - 2020/7272 }
18/15*35/36+18/15*15/18-18/15*20/72
5/6+1/1-1/3
5/6+6/6-2/6
3/2
bài 2 ; Đ/S 18 m2 18 dm2 = 1818 dm2 đúng hay sai
Tính A=17/18+1718/1718+171717/181818+...+1717...17/1818...18(2018 chữ số 17 và 18). Ai làm đc tk cho
A=17/18+1718/1718+171717/181818
\(A=\frac{17}{18}+\frac{1717}{1818}+\frac{171717}{181818}+...+\frac{1717..17}{1818...18}\)(2018 số 17 và 18)
\(=\frac{17}{18}+\frac{17.101}{18.101}+\frac{17.10101}{18.10101}+...+\frac{17.1010...01}{18.1010...01}\)(2017 cặp số 10 liên tiếp và dư 1 số 1)
\(=\frac{17}{18}+\frac{17}{18}+\frac{17}{18}+...+\frac{17}{18}\left(2018\text{ số hạng}\right)\)
\(=\frac{17}{18}.2018=\frac{17153}{9}\)
Bài giải
\(A=\frac{17}{18}+\frac{1717}{1818}+\frac{171717}{181818}+\frac{17...17}{18...18}\text{ ( 2018 chữ số17 và 18 ) }\)
\(A=\frac{17}{18}+\frac{17\cdot101}{18\cdot101}+...+\frac{17\cdot1010...1}{18\cdot1010...1}\) ( Có 2017 cặp số 10 và 1 số 1 )
\(A=\frac{17}{18}+\frac{17}{18}+...+\frac{17}{18}\)( Có 1009 số hạng )
\(A=\frac{17}{18}\cdot1009\)
\(A=\frac{17153}{18}\)