Respuestas

  • Usuario de Brainly
2012-09-03T02:48:09+02:00

m -(m+n) -3{-2m + [ -2m + n + 2(-1 +n) - (m +n -1) ] }

m-m-n+6m+2m-n+2-2n-m-n+1= 7m-5n+3