Question

Tìm X:

a) 3885 : ( X x 21 ) = 37

b) 50343 : X = 405 ( dư 123 )

Answer 1

a: =>x*21=3885:37=105

=>x=105:21=5

b: 50343:x=405 dư 123

=>x=(50343-123)/405=124

Answer 2

a, 3885 : (X x 21) = 37
=> 21X = 3885/37
=> 21X = 105
=> X = 5
b, 50343 : X = 405 (dư 123)
=> X = 50343 : 405 + 123
=> X = 33386/135

Answer 3

a) \(3885:\left(x\times21\right)=37\)

\(x\times21=3885:37\)

\(x\times21=105\)

\(x=105:21=5\)

b) \(50343:x=405\)(dư 123)

=> \(405\times x+123=50343\)

\(405\times x=50343-123\)

\(405\times x=50220\)

\(x=50220:405=124\)