Question

-(+3-2-1)+(-5+7+4) =
-(-5+6-6-3+6)+3(+5-2+1) =
-2-4+(-8+4-6+8+7) =
-2-4+(8+4-6+7) =
+(-3+5+2+1)-(-8-4-9-5)=
+(-8-3-9)+4(+2+9) =
-(+4-6-9)+(-4+5-2) =
+(-4+7+2)+9-(-3+4-3) =
-(-5-3)-(+4+7+2+3) =
-(-5-3)-(+4+7+2+3) =
-2-4+(-8+4-6+7) =

Answer 1

Acá están todos resueltos :D!!!

Espero que te sirva mucho.