Question

Simplify.3w-4(4z-2w)+4z

Answer 1

Problem:

Simplify.

3w-4(4z-2w)+4z​

Solution:

`3w-4\mleft(4z-2w\mright)+4z​\text{ = 3w - 4(4z) + (4)(2)w + 4z}`

that is:

`\text{ = 3w - 4(4z) + (4)(2)w + 4z = 3w -16z + 8w + 4z}`

this is equivalent to :

`\text{ = (3w + 8w) +( 4z-16z ) = 11w -12z}`

then, the correct solution would be:

`\text{ = 11w -12z}`