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) 12 . ( x - 1 ) = 0
x - 1 = 0 : 12
x - 1 = 0
x = 0 + 1
x = 1
b) ( x - 47 ) - 115 = 0
x - 47 = 0 + 115
x - 47 = 115
x = 115 + 47
x = 162
c) x - 36 : 18 = 12
x - ( 36 : 18) = 12
x - 2 = 12
x = 12 + 2
x = 14
d) (x - 36) : 18 = 12
x - 36 = 12 . 18
x - 36 = 216
x = 216 + 36
x = 252
