Question

(ii) 2x + 9y -- 7z, 3y + z-3x, 2z- 4y- x add
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Answer 1

Step-by-step explanation:

math answer _ -2x+8y-4z

Answer 2

Step-by-step explanation:

2x+9y-7z+3y+z-3x+2z-4y-x

(2x-3x-x)+(9y+3y-4y)+(-7z+z+2z)

-2x+8y-4z

8y-2x-4z