Explicación paso a paso:
4( 3x + 3 ) - 5x = 3 ( 4x + 8 ) + 9
12x + 12 - 5x = 12x + 24 + 9
7x + 12 = 12x + 33
- 21 = 5x
- 21/5 = x
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Explicación paso a paso:
4( 3x + 3 ) - 5x = 3 ( 4x + 8 ) + 9
12x + 12 - 5x = 12x + 24 + 9
7x + 12 = 12x + 33
- 21 = 5x
- 21/5 = x