quá ez
trả lời : ko bt
\(x:\left[\left(1800+600\right):30\right]=560:\left(315-35\right)\)
\(x:\left(2400:30\right)=560:280\)
\(x:80=2\)
\(x=2\cdot80\)
\(x=160\)
x : [ ( 1800 + 600 ) : 30 ] = 560 : ( 315 - 35 )
x : [ 2400 : 30 ] = 560 : 80
x : 80 = 7
x = 7 x 80
x = 560
Ơ lộn.Làm nhầm.
x = 160