Help me work out this algebra problem?

Question

-2(5x-4) - (4x + 1)

and

l15y + 10I for y -3/5

Answer 1

1. -2(5x-4) - (4x+1)

  Use the distributive property on both sets of parenthesis

get (-10x+8) + (-4x-1)

Simplify the variables

get (-14x+8) - 1

The parenthesis are no longer needed as everything in it is simplified as much as possible

get -14x+8 - 1

Simplify

Final answer: -14x+7

2. |15y + 10| for y = -3/5 (If you mean y = -3/5, it's unclear to me)

Substitute y for -3/5

|15(-3/5) + 10|

Simplify

get |-9 + 10|

Simplify

Final answer: |1| or 1

2. Is not 19

Answer 2

oh man! im doing those in class night now!!

1st you need to distribute:

-10x + 8 - 4x + 1

Then you just combine like-terms:

-14x + 7

then on the other one..

|15*3/5 +10|

1st you would take 15/1 multiplied (*) by 3/5:

45/5 which reduces to 9/1

then add them together:

|9 + 10 |= 19

how did you get 1?

Answer 3

the first one is -10x +8 -4x +1. the u get -14x+9