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If A = 5x + 2y - z , B = 4x + y + z , Find -2A - B?
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If A = 5x + 2y - z , B = 4x + y + z , Find -2A - B?
To find -2A - B, we need to substitute the given expressions for A and B into the expression and simplify.

Given:
A = 5x - 2y - z
B = 4x + y + z

Substituting the values of A and B into -2A - B:

-2A - B = -2(5x - 2y - z) - (4x + y + z)

Now, let's simplify the expression step by step.

Distributing -2 to the terms inside the parentheses:

-2A - B = -10x + 4y + 2z - (4x + y + z)

Removing the parentheses:

-2A - B = -10x + 4y + 2z - 4x - y - z

Combining like terms:

-2A - B = (-10x - 4x) + (4y - y) + (2z - z)

Simplifying further:

-2A - B = -14x + 3y + z

So, the expression -2A - B simplifies to -14x + 3y + z.

In summary:

-2A - B = -14x + 3y + z

Therefore, -2A - B is equal to -14x + 3y + z.
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