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Scrieti fara paranteze:
-(-3)-(-7-5)-(-16+25-19)=...
-(-3+2)-(-5+6-4)=...
-(-9-3+92)+(-3)-(-8+12)=...


Răspuns :

3+7+5+16-25+19
3-2+5-6+4
9+3-92-3+8-12
-(-3)-(-7-5)-(-16+25-19)=
=3+7+5+16-25+19
=15+16-25+19
=30-25+19
=24

-(-3+2)-(-5+6-4)=
=3-2+5-6+4
=6-6+4
=4

-(-9-3+92)+(-3)-(-8+12)=
=9+3-92-3+8-12
=-80-3+8-12
=-75-12
=-87