Question

from the sum of 3x+2y+3z and 3x -4y +5z ,subtract 6x + 7y -2z​

Answer 1

Answer:

$3x + 2y + 3z + (3x - 4y + \\ 5z) - (6x + 7y - 2z) \\ = 3x + 2y + 3z + 3x \\ - 4y + 5z - 6x - 7y + 2z \\ = 3x + 3x - 6x + 2y - 4y \\ - 7y + 3z + 5z + 2z \\ = - 9y + 10z$

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