Question

Necesito eliminar parentesis y reducir terminos semejantes
1) 12 + (-5x + 1) – (-2x + 7) + (-3x) – (-6)=

2) 3x + 2y - [x – (x – y)]=

3) 2m – 3n - [-2m + n – (m – n)]=

4) –(a + b – c) – (-a – b – c) + (a – b + c)=

Answer 1

Respuesta:

1) 12 + (-5x + 1) – (-2x + 7) + (-3x) – (-6)

12 -5x + 1 + 2x - 7 - 3x + 6

12 - 6x

2)  3x + 2y - [x – (x – y)]

3x + 2y - [x -x + y]

3x + 2y - y

3x + y

3) 2m – 3n - [-2m + n – (m – n)]

2x - 3n - [-2m + n -m + n]

2x - 3n - [-3m + 2n]

2x - 3n + 3m -2n

-5n + 3m + 2x

4) –(a + b – c) – (-a – b – c) + (a – b + c)

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

a - b + 3c