Question

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Answer 1

Respuesta:

$25x + 12x - 31x - 8x + 5x \\ = 37x - 31x - 8x + 5x \\ = 6x - 8x + 5x \\ = - 2x + 5x \\ = 3x$

$43m {x}^{3} + 7m {x}^{3} - 17m {x}^{3} - 13m {x}^{3} \\ = 50m {x}^{3} - 17m {x}^{3} - 13m {x}^{3} \\ = 33m {x}^{3} - 13m {x}^{3} \\ = 20m {x}^{3}$

$25y + 12y - 31y - 8y + 5y \\ = 37y - 31y - 8y + 5y \\ = 6y - 8y + 5y \\ = - 2y + 5y \\ = 3y$