Question

How do you simplify `5(3.4k-7)+(3k+21)`?

Answer 1

`20k - 14`

Explanation:

`5(3.4k-7) + (3k + 21)`

To simplify this, use the distributive property:

Following this image, we know that:
`color(blue)(5(3.4k-7) = (5 * 3.4k) + (5 * -7) = 17k - 35)`

Put it back into the expression:
`17k - 35 + 3k + 21`

Combine like terms:
`20k - 14`

Hope this helps!