Help plz; -5(a + 2b - 6), (x - 2y + 7)3, and (3x - 2)(-5) ?

Question

UGHH my math teacher sucks at explaining stuff so some help would be uhh mucho appreciated XD

Answer 1

use this it will help u

Please          parenthensis

Excuse         Exponents

My                Mult or

Dear              division

Aunt                  add or

Sally              subt depending on with one comes first           That will help u

Answer 2

1)    -5a - 10b + 30

2)    -15x  +  10

Answer 3

1. distributive property

-5(a+2b-6)

-5a-10b+30

2. distributive property

(x-2y+7)3

3x-6y=21

3. distributive property

(3x-2)(-5)

-15x+10

take each outer number and multiply it with the ones on the inside separately.  

Answer 4

Distribute the -5 to everything in the first set of parentheses to get:

-5a-10b+30

The second one, you distribute the 3 in the same way, multiplying it by everything in the parentheses to get 3x-6y+21

For the third, you would have to multiply the -5 by everything in the parentheses to get -15x+10