Question

11. Subtract:
4xy + 6yz - 8zx from 3xy - 4yz - 3zx.​

Answer 1

Answer:

(3xy-4yx-3zx) - (4xy+6yx-8zx)

(3xy-4yx-3zx) - (4xy-6yx+8zx)

3xy-4xy-4yx-6yx+8zx-3zx

-xy-10yx+5zx

hope it helps you

Answer 2

Given,

Two algebraic expressions 4xy + 6yz - 8zx and 3xy - 4yz - 3zx.​

To find,

Subtract: 4xy + 6yz - 8zx from 3xy - 4yz - 3zx.​

Solution,

Mathematically, the given questions can be represented as-

(3xy - 4yz - 3zx)-(​4xy + 6yz - 8zx)

Since there is a negative sign ahead of the bracket  (4xy + 6yz - 8zx) hence the sign of all the terms would be changed.

We would get,

3xy - 4yz - 3zx-​4xy - 6yz + 8zx)

We would now subtract like terms from their respective like terms.

⇒   (3xy-4xy) -4yz-6yz -3zx+8zx

⇒ -xy -10yz+5zx

Hence, on subtracting 4xy + 6yz - 8zx from 3xy - 4yz - 3zx we get, -xy -10yz+5zx.