77.(-3).8+2.(-12).3+(-24).20
= 77 . ( - 24 ) + ( - 24 ) . 3 + ( - 24 ) . 20
= ( - 24 ) . ( 77 + 3 + 20 )
= ( - 24 ) . 100
= - 2400
77 . ( - 3 ) . 8 + 2 . ( - 12 ) . 3 + ( - 24 ) . 20
= 77 . ( - 24 ) + ( - 24 ) . 3 + ( - 24 ) . 20
= - 24 . ( 77 + 3 + 20 )
= - 24 . 100
= - 2400
77.(-3).8+2.(-12).3+(-24).20
= -231.8+(-240).3+(-480)
= -1848+(-72)+(-480)
=1920+(-480)
=1824
tk nha