Question

Subtract 3xy +5yz-7zx from 5xy-2yz-2zx+10xyz​

Answer 1

Answer:

5xy-2yz-2zx+10xyz - ( 3xy + 5yz - 7zx )

5xy - 3xy - 2yz - 5yz - 2zx + 7zx + 10xyz

2xy -7yz +5zx+10xyz is answer

Answer 2

Answer:

2xy-7yz+5zx+10xyz

Explanation:

5xy-2yz-2zx+10xyz-(3xy+5yz-7zx)

5xy-2yz-2zx+10xyz-3xy-5yz+7zx

if we take out 3xy+5yz-7zx the sign changes

then if we solve it. It becomes

2xy-7yz+5zx+10xyz