7+(-12+43)-[2+(19-34)]
= 7 + 31 - [ 2 + (-15) ]
= 7 + 31 - (-13)
= 38 - (-13)
= 51
7+(-12+43)-[2+(19-34)] =7+31-[2+(-15)]
=38-(-13)
=51
tick nha
= 7 + 31 - [ 2 + ( -15 ) ]
= 38 - ( -13 )
= 51
7 + ( -12 + 43 ) - [ 2 + ( 19 - 34 ) ]
= 7 + 31 - [ 2 + ( -15 ) ]
= 38 - ( -13 )
= 51
7 + ( -12 + 43 ) - [ 2 + ( 19 - 34 ) ]
= 7 + 31 - [ 2 + ( -15 ) ]
= 38 - ( -13 )
= 51