28.(-70 + 35 ) - (28 - 56) . 35
= 28.(-35) - (-28) . 35
= 28 . (-35 - 35)
= 28.(-70)
= -1960
mik nhah nhất đó
28 . ( - 70 + 35 ) - ( 28 - 56 ) . 35
= 28 . ( - 35 ) - ( - 28 ) . 35
=( - 980 )- ( - 980 )
= 0
tk cho mk nha
28.(-70+35) - ( 28 - 56 ) . 35
= 28 . ( - 70) + 28 . 35 - 28 . 35 - 56 . 35
= 28 . ( -70) + 28 . 35 + ( -28) .35 + ( -56) .35
= 28.(-70) + 35.(-28+28) + 56 .(-35)
=28.2.(-35)+0 + 56 .(-35)
= 56.(-35)+56.(-35)
= 56.[-35+(-35)]
=56.-70
=-3920