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3 years ago

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Mathematics

1 answer:

Genrish500 [490]3 years ago

6 0

Answer:

the coefficient of x is 2

Step-by-step explanation:

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

Apply the distributive law: - (a - b) = -a + b

Therefore, - (3x - y - z) = -3x + y + z

So (3x - y + z) + (2x - y - z) - (3x - y - z) = 3x - y + z + 2x - y - z - 3x + y + z

Collect like terms: = 3x + 2x - 3x - y - y + y + z - z + z

Combine like terms: = 2x - y + z

Therefore, the coefficient of x is 2

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