add the following algebraic expression using both horizontal and vertical methods
2x+9y-7z;3y+z+3x;2x-4y-z
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Step-by-step explanation:
Vertical Method
2x+9y-7z
3x+3y+z
2x-4y-z
_______
7x+8y-72
Horizontal Method
2x+9y−72+3x+3y+2+2x−4y−2
=7x+8y−72
1=2
Both ans are same.
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