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a, \(12\left(x-1\right)=0\Rightarrow x-1=0\Rightarrow x=1\)
b, \(\left(x-47\right)-115=0\Rightarrow x-47-115=0\)
\(\Rightarrow x=115+47=162\)
c, \(x-36:18=12\Rightarrow x-2=12\Rightarrow x=14\)
d, \(\left(x-36\right):18=12\Rightarrow x-36=216\Rightarrow x=252\)
Chúc bạn học tốt!!!
\(a.12\left(x-1\right)=0\)
\(x-1=0:12\)
\(x-1=0\)
\(x=0+1\)
\(x=1\)
\(b.\left(x-47\right)-115=0\)
\(x-47=0+115\)
\(x-47=115\)
\(x=115+47\)
\(x=162\)
\(c.x-36:18=12\)
\(x-36=12.18\)
\(x-36=216\)
\(x=216+36\)
\(x=252\)
\(d.\left(x-36\right):18=12\)
\(x-36=12.18\)
\(x-36=216\)
\(x=216+36\)
\(x=252\)
a) 2 . x + 12 = 36
2 . x = 36 - 12
2 . x = 24
x = 24 : 2
x = 12
Vậy x = 12
b) (x + 21) : 8 + 12 = 21
( x + 21 ) : 8 = 21 - 12
( x + 21 ) : 8 = 9
x + 21 = 9 . 8
x + 21 = 72
x = 72 - 21
x = 51
Vậy x = 51
c) (3 . x - 18) . (x - 9) = 0
\(\Rightarrow\begin{cases}3.x-18=0\\x-9=0\end{cases}\)
\(\Rightarrow\begin{cases}3.x=18\\x=0+9\end{cases}\)
\(\Rightarrow\begin{cases}x=18:3=6\\x=9\end{cases}\)
Vậy \(x\in\left\{6;9\right\}\)
a)
\(2x+12=36\)
\(\Rightarrow2\left(x+6\right)=36\)
\(\Rightarrow x+6=18\)
=> x = 12
Vậy x = 12
b)
\(\left(x+21\right):8+12=21\)
\(\Rightarrow\left(x+21\right):8=9\)
\(\Rightarrow x+21=72\)
=> x = 51
Vậy x = 51
c)
\(\left(3x-18\right)\left(x-9\right)=0\)
\(\Rightarrow3\left(x-6\right)\left(x-9\right)=0\)
\(\Rightarrow\left(x-6\right)\left(x-9\right)=0\)
\(\Rightarrow\left[\begin{array}{nghiempt}x-6=0\\x-9=0\end{array}\right.\)
\(\Rightarrow\left[\begin{array}{nghiempt}x=6\\x=9\end{array}\right.\)
Vậy x = 6 ; x = 9
A, ( x- 45 ) .27=0
x-45=0
x=45
b, 23.(42-x)=23
42-x=0
x= 42
c, 2436:x=12
x=203
d, 6.x-5=613
6x=618
x= 103
e 12.(x-1)=0
x-1=0
x=1
g (x-47)-115=0
x-47=115
x=162
h.315+(146-x)=401
164-x=86
x=78
n, x-36:18=12
x-2=12
x=14
m, (x-36):18=12
x-36=216
x=252
ok bạn hết lun òi nhá
TRAN THI MINH NGOC sao không tích cho bạn trang eva vất vả ngồi làm hố hố
a) \(\left(x-53\right)-125=0\)
\(\Leftrightarrow x-53=125\)
\(\Leftrightarrow x=178\)
b) \(135-\left(x+37\right)=80\)
\(\Leftrightarrow x+37=55\)
\(\Leftrightarrow x=18\)
c) \(321+\left(225-x\right)=421\)
\(\Leftrightarrow225-x=100\)
\(\Leftrightarrow x=125\)
d) \(\left(x-36\right):18=12\)
\(\Leftrightarrow x-36=216\)
\(\Leftrightarrow x=252\)
e) \(x-36:18=12\)
\(\Leftrightarrow x-2=12\)
\(\Leftrightarrow x=14\)
\(a.\left(x-53\right)-125=0\)
=>\(x-53=0+125\)
=>\(x-53=125\)
=>\(x=125+53\)
=>\(x=178\)
\(b.135-\left(x+37\right)=80\)
=> \(x+37=135-80\)
=>\(x+37=55\)
=>\(x=55-37\)
=>\(x=18\)
\(c.321+\left(225-x\right)=421\)
=>\(225-x=421-321\)
=>\(225-x=100\)
=>\(x=225-100\)
=>\(x=125\)
\(d.\left(x-36\right):18=12\)
=>\(x-36=12x18\)
=>\(x-36=216\)
=>\(x=216+36\)
=>\(x=252\)
\(e.x-36:18=12\)
=>\(x-2=12\)
=>\(x=12+2\)
=>\(x=14\)
a) x-36:18=12
x-2=12
x=12+2
x=14
b)(x-36):18=12
x-36=216
x=216+36
x=252
b,, ( x - 36 ) : 18 = 12
x - 36 = 12 x 18
x - 36 = 2016
x = 2016 + 36
x = 2052
a) 0 : x = 0
x = 0 : 0
x = 0
b ) x - 36 : 18 = 12
x - 2 = 12
x = 12 + 2
x = 14
c ) ( x - 36 ) : 18 = 12
( x - 36 ) = 12 x 18
( x - 36 ) = 216
x - 36 = 216
x = 216 - 36
x = 180
b) x - 36 : 18 = 12
x - 2 = 12
x = 12 + 2
x = 14
c) (x - 36) : 18 = 12
x - 36 = 12 x 18
x - 36 = 216
x = 216 + 36
x = 252