274 x 24 + 76 x 312 + 24 x 226 + 188 x 76
= [ 24 x ( 274 + 226 ) ] + [ 76 x ( 188 + 312 ) ]
= ( 24 x 500 ) + ( 76 x 500 )
= 24 x 500 + 76 x 500
= 500 x ( 76 + 24 )
= 500 x 100
= 50 000
Vậy : 274 x 24 + 76 x 312 + 24 x 226 + 188 x 76
= 50 000
tick nha!!!