Question

Subtract (2x – 3y + 4z) from the sum of (x + 3y – 4z), (4x – y + 9z) and (-2x + 3y - z).​

Answer 1

Answer:

According to question

(x+3y-4z+4x-y+9z-2x+3y-z)-2x-3y+4z

=(x+4x-2x+3y-y+3y-4z+9z-z)-2x-3y+4z

=(3x+5y+5z)-2x-3y+4z

=3x+5y+5z-2x-3y+4z

=x+2y+9z

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Answer 2

Answer:

-1x -4y +16z

Step-by-step explanation:

x + 3y + 4z

4x - y + 9z (+)

5x + 2y + 13z

5x - 4y + 13z

-2x + 3y - z (+)

- 3x -1y +12z

-3x -1y +12z

2x – 3y + 4z (-)

-1x -4y +16z