Question

ayúdenme porfis es urgente :'
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Answer 1

Respuesta:

b) 2 - (6 - 7) + 3( -5 - 4) +  [- (-8 + 10) + 2 (2 + 2)] + (3 + 4)

    = 2 - (-1) + 3(-9) + [- (2) + 2(4)] + (7)

 

    = 2 + 1 - 27 + [-2 + 8] + 7

    = -24 + [6] + 7

  = -11

c) 4 {(x + 2x) - [-(x + 5x) + (6x - 8x - 3x)] + (5x + 3x -10x)}

    = 4 {(3x) - [-(6x) + (-5x)] + (-2x)}

   = 4 {3x - [- 6x - 5x] - 2x}

   = 4 {3x - [-11x] - 2x}

   = 4 {3x + 11x - 2x}

  = 4 {12x}

  = 48x