(38-42+14)-(25-27-15)
= 38-42+14-25+27+15
= 27
-(12-32)-(-12+32)
= -12+32+12-32
= 0
-(12+21-23)-(23-21+10)
= -12-21+23-23+21-10
= -22
(38-42+14)-(25-27-15)
=38-42+14-25+27+15
= (38+14)-42-(25-15)+27
= 52-42-10+27
= (52-42)-(10-27)
= 10+17
=27
-(12-32)-(-12+32)
= -12+32+12-32
= (-12+12)+(32-32)
= 0+0
= 0
-(12+21-23)-(23-21+10)
=-12-21+23-23+21-10
= (-12-10)-(21-21)+(23-23)
= -22 -0+0
=-22
(38-42+14)-(25-27-15)
=38-42+14-25+27+15
= (38+14)-42-(25-15)+27
= 52-42-10+27
= (52-42)-(10-27)
= 10+17
=27
-(12-32)-(-12+32)
= -12+32+12-32
= (-12+12)+(32-32)
= 0+0
= 0
-(12+21-23)-(23-21+10)
=-12-21+23-23+21-10
= (-12-10)-(21-21)+(23-23)
= -22 -0+0
=-22