Question

subtract the sum of 5 x minus 4 y + 6 z and - 8 x + 5 - 2z from the sum of 12 x minus y + 3 and -3 x + 5y - 8 z​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

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Answer:

$= 12x - y + 3 + ( -3x + 5y - 8z) - (35x - 4y + 6z + ( - 8x + 5 - 2z)) \\ \\ = 12x - y + 3 - 3x + 5y - 8z - (35x - 4y + 6z - 8x - 5 - 2z) \\ \\ = 12x - y + 3 - 3x + 5y - 8z - (27x - 4y + 4z - 5) \\ \\ = 9x + 3 + 4y - 8z - 27x + 4y - 4z + 5 \\ \\ = - 18x + 8y - 12z + 8$

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