Respuesta :

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Simplify the following:
2 x - 3 (4 - 5 (6 x + 7 y) - 8)

Grouping like terms, 4 - 5 (6 x + 7 y) - 8 = -5 (6 x + 7 y) + (4 - 8):
2 x - 3 (-5 (6 x + 7 y) + (4 - 8))

4 - 8 = -4:
2 x - 3 (-4 - 5 (6 x + 7 y))

-5 (6 x + 7 y) = -30 x - 35 y:
2 x - 3 (-30 x - 35 y - 4)

-3 (-4 - 30 x - 35 y) = 12 + 90 x + 105 y:
2 x + 12 + 90 x + 105 y

Grouping like terms, 2 x + 12 + 90 x + 105 y = 105 y + (2 x + 90 x) + 12:
105 y + (2 x + 90 x) + 12

2 x + 90 x = 92 x:

Answer:  105 y + 92 x + 12