Răspuns :
[ -7 + (-4 +11 )] x [ 5- ( 6 +7 ) ] =
( -7 +7 ) x ( 5 -( 6 +7 ) =
0 ( 5 - ( 6 +7 )] =
= 0
[ -7 + ( -4 + 11 ) ] x [ 5 - ( 6 + 7 ) ] =
= [ -7 + 7 ] x [ 5 - ( 6 + 7 ) ]
= 0 [ 5 - ( 6 + 7 ) ]
= 0
[ -7 + (-4 +11 )] x [ 5- ( 6 +7 ) ] =
( -7 +7 ) x ( 5 -( 6 +7 ) =
0 ( 5 - ( 6 +7 )] =
= 0
[ -7 + ( -4 + 11 ) ] x [ 5 - ( 6 + 7 ) ] =
= [ -7 + 7 ] x [ 5 - ( 6 + 7 ) ]
= 0 [ 5 - ( 6 + 7 ) ]
= 0