x : 12 = 613
Tính:
a , − 13. x − 645 . x + 613 = 0 b , 651. x − 12 . x + 946 = 0
a , x = 645 x = − 613 b , x = 12 x = − 946
Tìm số tự nhiên x , biết:
a) 6 . x - 5 = 613
b) x - 36 : 18 = 12
c) (x - 36) : 18 = 12
b) 6.x-5=613
c) 12.(x-1)=0
a) 6.x - 5 = 613
6.x = 613 + 5
6.x = 618
x = 618 : 6
x = 103
c) 12.(x-1) = 0
x - 1 = 0 : 12
x - 1 = 0
x = 0 + 1
x = 1
\(6.x-5=613\)
\(6.x\) \(=613+5\)
\(6.x\) \(=618\)
\(x=618:6\)
\(x=103\)
\(12.\left(x-1\right)=0\)
\(x-1=0:12\)
\(x-1 =0\)
\(x=0+1\)
\(x=1\)
b) 6.x-5 = 613
6.x = 613+5
6.x = 618
x = 618 : 6
x = 103
c) 12.(x-1) = 0
x-1 = 0:12
x-1 = 0
x = 0+1
x = 1
tìm số tự nhiên x, biết :
2436 : x = 12
b) 6 . x - 5 = 613
2436 : x = 12
=> x = 2436 : 12 = 203
6x - 5 = 613
=> 6x = 613 + 5 = 618
x = 618 : 6 = 103
x = 2436:12
x = 203
6.x-5 = 613
6.x = 613+5
6.x = 618
x = 618:6
x = 103
Tìm sso tự nhiẽn x, biết:
a) 6 . x - 5 =613 b) 12 . (x-1) = 0
a) \(6x-5=613\)
\(\Leftrightarrow6x=618\Leftrightarrow x=103\)
b) \(12\left(x-1\right)=0\)
\(\Leftrightarrow x-1=0\Leftrightarrow x=1\)
a,6 .x-5=613
6x=613+5
6x=618
x=618:6
x=103
b,12.(x-1)=0
(x-1)=0:12
(x-1)=0
x=0+1
x=1
Tim x:
a) 6 x X - 5 = 613 b) 12 x X + 3 x X = 30
C) 125 - 25 x (X - 1) = 100 d) ( X - 2 ) x 9 X - 4) = 0
`#040911`
`a)`
`6 \times x - 5 = 613`
`=> 6 \times x = 613 + 5`
`=> 6 \times x = 618`
`=> x = 618 \div 6`
`=> x = 103`
Vậy, `x = 103`
`b)`
`12 \times x + 3 \times x = 30`
`=> x \times (12 + 3) = 30`
`=> x \times 15 = 30`
`=> x = 30 \div 15`
`=> x = 2`
Vậy, `x = 2`
`c)`
`125 - 25 \times (x - 1) = 100`
`=> 25 \times (x - 1) = 125 - 100`
`=> 25 \times (x - 1) = 25`
`=> x - 1 = 25 \div 25`
`=> x - 1 = 1`
`=> x = 1 + 1`
`=> x = 2`
Vậy, `x = 2`
`d)`
`(x - 2) \times (9x - 4) = 0?`
`=>`
TH1: `x - 2 = 0`
`=> x = 0 + 2`
`=> x = 2`
TH2: `9x - 4 = 0`
`=> 9x = 4`
`=> x = 4/9`
Vậy, `x \in {2; 4/9}.`
\(a,6x-5=613\\ \Leftrightarrow6x=618\\ \Leftrightarrow x=103\\ b,12x+3x=30\\ \Leftrightarrow15x=30\\ \Leftrightarrow x=2\\ c,125-25\left(x-1\right)=100\\ \Leftrightarrow25\left(x-1\right)=25\\ \Leftrightarrow x-1=1\\ \Leftrightarrow x=2\\ d,\left(x-2\right)\cdot\left(9x-4\right)=0\\ \Leftrightarrow\left[{}\begin{matrix}x=2\\x=\dfrac{4}{9}\end{matrix}\right.\)
Tìm X:
a.2436 :x = 12
b. 6 x - 5 = 613
c.( x - 47 ) - 115 = 7
d . 315 + (146 - x ) =401
e.( x - 36 ) : 18 = 12
a.2436 :x = 12
x = 2436 : 12
x = 203
b. 6x - 5 = 613
6x = 613 + 5
6x = 618
x = 618 : 6
x = 13
c.( x - 47 ) - 115 = 7
x - 47 = 7 + 115
x - 47 = 122
x = 122 + 47
x =169
d . 315 + (146 - x ) =401
146 - x = 401 - 315
146 - x = 86
x = 146 - 86
x = 60
e.( x - 36 ) : 18 = 12
x - 36 = 12 x 18
x - 36 = 216
x = 216 + 36
x = 252
a , 2 436 : x = 12
x = 2 436 : 12
x = 203
b , 6x - 5 = 613
6x = 618
x = 103
c , ( x - 47 ) - 115 = 7
x - 47 = 122
x = 169
d , 315 + ( 146 - x ) = 401
146 - x = 401 - 315
146 - x = 86
x = 146 - 86
x = 60
e , ( x - 36 ) : 18 = 12
x - 36 = 216
x = 216 + 36
x = 252
a) 2436 : x = 12 b) 6x - 5 = 613 c) ( x - 47 ) - 115 = 7 d) 315 + ( 146 - x ) = 401
x = 2436 : 12 6x = 613 + 5 x - 47 = 7 + 115 146 - x = 401 - 315
x = 203 6x = 618 x - 47 = 122 146 - x = 86
x = 618 : 6 x = 122 + 47 x = 146 - 86
x = 103 x = 169 x = 60
Tìm sso tự nhiẽn x, biết:
a) 6 . x - 5 =613 b) 12 . (x-1) = 0
a) 6 . x - 5 = 613
6 . x = 613 + 5
6 . x = 618
x = 618 : 6
x = 103
b) 12 . ( x - 1 ) = 0
x - 1 = 0 : 12
x - 1 = 0
x = 0 + 1
x = 1
a) 6x−5=613
⇔6x=618⇔x=103
b) 12(x−1)=0
⇔x−1=0⇔x=1
a) 6 . x - 5 = 613
6 . x = 613 + 5
6 . x = 618
x = 618 : 6
x = 103
b) 12 . ( x - 1 ) = 0
x - 1 = 0 : 12
x - 1 = 0
x = 0 + 1
x = 1
Tìm số tự nhiên x , biết : ( Dấu ( . ) là dấu nhân )
a) 6 . x - 5 = 613
b ) 12 . ( x - 1 ) = 0
c ) 0 : x = 0
6.x-5=613
6.x=613+5
6.x=618
x=618:6
x=103
12.(x-1)=0
x-1=12.0
x-1=0
x=1+0
x=1
0:x=0
x=0
a,6x-5=613
6x=618
x=103
b,12(x-1)=0
x-1=0
x=1
c,0:x=0
với TH này mọi giá trị của x thỏa mãn
a)6.x-5=613
6.x =613+5
6.x =618
x =618:6
x =103
b)12.(x-1)=0
(x-1)=0:12
(x-1)=0
x =0+1
x =1
c)0:x=0
x=0:0(vô lí)
x=rỗng