Add the following algebraic expressions: 3x + 9y - 7z, 3y + z - 3x and 2z - 4y - x
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(3x+9y-7z)+(-3x+3y+z)+(-x-4y+2z
=-x+8y-4z
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Answer:
the given algebraic expression by adding this expression 3x + 9y - 7z, 3y + z - 3x and 2z - 4y - x
We get,
3x + 9y - 7z+3y + z - 3x + 2z - 4y - x=
= > -x+8y-4z
or
= > x-8y+4z
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