Question

câu 1 : 3885 / ( x * 21 ) = 37

câu 2: 50343 / x = 405 ( dư 123)

câu 3:3257 + 25286 / x =3304 

câu 4: 3132  - 19832 / x = 3058

Answer 1

a ) 3885 / ( x * 21 ) = 37

x * 21 = 3885 : 37

x * 21 = 105

x  = 105 : 21

x = 5

b ) 50343 : x = 405 ( dư 123 )

x = ( 50343 - 123 ) : 405

x = 50220 : 405

x = 124

c ) 3257 + 25286 : x = 3304

25286 : x = 3304 - 3257

25286 : x = 47

x = 25286 : 47

x = 538

Answer 2

a ) 3885 / ( x * 21 ) = 37

x * 21 = 3885 : 37

x * 21 = 105

x  = 105 : 21

x = 5

b ) 50343 : x = 405 ( dư 123 )

x = ( 50343 - 123 ) : 405

x = 50220 : 405

x = 124

c ) 3257 + 25286 : x = 3304

25286 : x = 3304 - 3257

25286 : x = 47

x = 25286 : 47

x = 538

@_@ k mình nha