Question

If we add, 7xy + 5yz – 3zx, 4yz + 9zx – 4y and –3xz + 5x – 2xy, then the answer is:​

Answer 1

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Answer 2

Step-by-step explanation:

7xy+5yz-3zx , 4yz+9zx-4y , -3xz+5x-2xy

7xy+5yz-3zx +4yz+9zx-4y-3xz+5x-2xy

Group like terms

7xy-2xy-3xz-3zx +9xz+5x-4y+5yz+4yz

Add similar elements

(7xy-2xy = +5xy

-3xz-3xz+9xz = +3xz

5x= +5x

-4y = -4y

5yz+4yz= 9yz )

5xy+3xz+5x-4y+9yz

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