7(7-4b) -8what will be the answer if i change it

Hi there! :)

=28b-57

*The answer must have a positive sign.*

Step-by-step explanation:

Distributive property: a(b+c)=ab+ac

First, you expand or multiply by the numbers from left to right.

It change positive to negative sign.

Finally, you add/subtract by the numbers from left to right.

It change positive to negative sign.

Final answer is 28b-57

I hope this helps you!

Have a nice day! :)

-Charlie

:D

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.