Question

Tìm  biết: 

Answer 1

x : [(1800 + 600) : 30] = 560 : (315 - 35)

=> x : (2400 : 30) = 560 : 280

=> x : 80 = 2

=> x = 2 . 80

=> x = 160

Vậy x = 160

Answer 2

x : [( 1800 + 600 ) : 30 ] = 560 : ( 315 - 35 )

x : [ 2400 : 30 ] = 560 : 280

x : 80 = 560 : 280

x : 80 = 2

x = 2.80

x = 160