Question

7(4n-9) - 3(n-7)
Use the Distributive Property to
write an equivalent expression.​

Answer 1

`25n - 42`

Explanation:

`7\left(4n-9\right)-3\left(n-7\right)`

`7\left(4n-9\right)`

`28n-63`

`=28n-63-3\left(n-7\right)`

`-3\left(n-7\right)`

`3n+21`

`=28n-63-3n+21`

`\mathrm{Group\:like\:terms}:-`

`28n-3n-63+21`

`=25n-42`

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Answer 2

• 25n - 42

Explanation:

Distributive Property:

• a(b + c) = ab + ac

Given:

• 7(4n-9) - 3(n-7)

Simplify:

• 7(4n-9) - 3(n-7) =
• 28n - 63 - 3n + 21 =
• 25n - 42