simplificar, suprimiendo los signos de agrupacion y reduciendo terminos semejantes: a) - [-(-a) ] - [ a-( -b+c ) ] + { -b + c +( b - c ) - 2 [ 3c - 5b - ( - 4a ) ] } b) - { - [ - ( a + b ) ] - [ a + ( - a + b - c ) ] } + {- [ - a + ( -b ) ] } c) - { 3m + [ - m - ( m + 4 ) ] + [ - ( m + n ) + ( - 2n + 3 ) ] } d) - { x + [ - ( x + y ) - [ - x + ( y - z ) - ( - x + y ) ] - y ] }

Question

contestada

Respuesta :

ivannaa ivannaa · Answer 1 · 2012-09-19T04:45:07+08:00

a) -[a]-[a+b-c]+{-b+c+b-c-2[3c-5b+4a]}

-a-a-b+c+{-b+c+b-c-6c+10b-8a}

2a-b+c-b+c+b-c-6c+10b-8a

-6a+9b+5c

b) -{-[-a-b]-[a-a+b-c]}+{-[-a-b]}

-{a+b-a+a-b+c}+{a+b}

-a-b+a-a+b-c+a+b

b-c

c)-{3m+[-m-m-4]+[-m-n-2n+3]}

-{3m-m+m-4-m-n-2n+3}

-3m+m-m+4+m+n+2n-3

-2m+3n+1

d)-{x+[-x-y-[-x+y-z+x-y]-y]}

-{x-x-y+x-y+z-x+y-y}

-x+x+y-x+y-z+x-y+y

2y-z

espero que este bien y te sirva ... !!!

besos

mjl06 mjl06 · Answer 2 · 2012-09-19T04:54:35+08:00

A) - [-(-a) ] - [ a-( -b+c ) ] + { -b + c +( b - c ) - 2 [ 3c - 5b - ( - 4a ) ] }

= - [a] - [ a+b-c ] + { -b + c + b - c - 2 [ 3c - 5b + 4a ] }

= -a -a -b +c + { -b + c + b - c -6c +10b -8a }

= -a -a -b +c -b + c + b - c -6c +10b -8a

= -6a+13b-5c