c) (43-14).(-5)+15.(-14-6) d) (-42).(35-16)-35.(16-42)
2 câu trả lời
$\text{Đáp án : c) ( 43 - 14 ) . ( -5 ) + 15 . ( -14 - 6 ) }$
$\text{= 29 . ( -5 ) + 15 . ( -20 ) }$
$\text{= -145 + ( -300 ) }$
$\text{= -445}$
$\text{d) ( -42 ) . ( 35 - 16 ) - 35 . ( 16 - 42 ) }$
$\text{= -42 . ( 19 ) - 35 . ( -26 ) }$
$\text{= -798 - ( -910 )}$
$\text{= 112 }$
Đáp án : c) ( 43 - 14 ) . ( -5 ) + 15 . ( -14 - 6 )
= 29 . ( -5 ) + 15 . ( -20 )
= -145 + ( -300 )
= -445
d) ( -42 ) . ( 35 - 16 ) - 35 . ( 16 - 42 )
= -42 . ( 19 ) - 35 . ( -26 )
= -798 - 910
= -1698