Respuestas

  • Usuario de Brainly
2013-11-23T12:24:31+01:00
(-3)*2-[(-5+(-7)-(-12))-(-3)] =
-6-[(-5+(-7+12)+3] =
-6-[(-5+5+3] =
-6-[+3] = 
-6-3 = -9

La solucion es -9