Thực hiện phép tính:
( 42 - 69 + 17 ) - ( 42 + 17)
= 42 - 69 + 17 - 42 + 17
= ( 42 - 42) - ( 17 - 17 ) - 69
= 0 - 0 - 69
= - 69
Ủng hộ nha! :)
( 42 - 69 + 17 ) - ( 42 + 17 )
= 42 - 69 + 17 - 42 - 17
= 42 - 42 + 17 - 17 - 69
= 0 + 0 - 69
= - 69
\(\left(42-69+17\right)-\left(42+17\right)\)
\(=\left(42-42\right)-\left(17-17\right)-69\)
\(=0-0-69\)
\(=-69\)
= 42-69+17-42-17
=(42 - 42) - 69 + (17-17 )
= 0 -69 +0
= -69
[ 42 - 69 + 17 ] - [ 42 + 17 ]
=[42 - 42] + [17 - 17 ] +69
= 0 + 0 + 69
= 69
(42-69+17)-(42+17)
=44-69+17+42+17
=(42-42)-(17-17)-69
=0-0-69
=-69
ai k mình mình k lại
=42-69+17-42-17.
=(42-42)+(17-17)+(-69).
=0+0+(-69).
=-69.
( 42 - 69 + 17 ) - ( 42 + 17 )
= - 10 - 59
= - 69
