47 x ( 28 + 50 ) - 23 x ( 47 + 50 )
= 47 x 28 + 50 x 47 - 23 x 47 - 50 x 23
= ( 47 x 28 - 23 x 47 ) + ( 50 x 47 - 50 x 23 )
= 47 x 5 + 50 x 24 = 235 + 1200 = 1435
Ai ko k mình thì bạn đó hư
47 x ( 28 + 50 ) - 23 x ( 47 + 50 )
= 47 x 78 - 23 x 97
= 3666 - 2231
= 1435
47 x ( 28 + 50 ) - 23 x ( 47 + 50 )
= 47 x 78 - 23 x 97
= 3666 - 2231
47x(28+50)-23x(47+50)
=47x78-23x97
=3666 - 2231
=1435