\(47\times54-2x+47\times46=2700\)
\(\Rightarrow47.\left(54+46\right)-2x=2700\)
\(\Rightarrow47.100-2x=2700\Rightarrow4700-x=2700\)
\(\Rightarrow x=4700-2700=2000\)
Vậy \(x=2000\)
47*54-2X+47*46
=47*54+47*46-2X=2700
=47*[54+46]-2X=2700
=47*100-2X=2700
=4700-2X=2700
2X=4700-2700
2X=2000
X=2000:2
X=1000
VẬY X=1000
Câu 1: 47 . 54 - 2x + 47 . 46 = 2700
=> 47 . (54 + 46) - 2x = 2700
=> 47 . 100 - 2x = 2700
=> 4700 - 2x = 2700
=> 2x = 2000
=> x = 1000