Question

REmove the grouping symbol in each of the following and simplify.

a.) 3x-(2x+3y) + 3(x-2y)
b.) -3y-{2x+3(x-y)-[2x-3(x-y)]}
c.) 2x-{-[9x-y)-2(x+y)]-3x+y

Help please! :(

Answer 1

(a) 3x - (2x + 3) + 3(x - 2y) -- distribute through the parenthesis
3x - 2x - 3 + 3x - 6y (combine like terms)
4x - 6y - 3

(b) -3y -(2x + 3(x - y) - 2[2x - 3(x - y)]
-3y - (2x + 3x - 3y - 2[2x - 3x + 3y]
-3y - 2x - 3x + 3y -2[-x + 3y]
-5x -2(x + 3y)
-5x -2x - 6y
-7x - 6y

(c) 2x - (-[9x - y) -2(x + y)]-3x + y
2x -(19x + y ) -2x - 2y)] -3x + y
2x -(19x + y + 2x + 2y) - 3x + y
2x -19x - y - 2x -2y - 3x + y
2x - 19x - 3x -2y
20x - 2y

I am not sure about b and c.....I am not the best at absolute values

Answer 2

@whpalmer4 ....can you check and see if these are correct ...please

Answer 3

@jim_thompson5910 .....are these correct ?

Answer 4

a) is correct, but b) is not

Answer 5

awww....I screwed up again

Answer 6

Everything in the absolute value turns positive....doesn't it ?

Answer 7

-3y-{2x+3(x-y)-[2x-3(x-y)]}

-3y-{2x+3(x-y)-[2x-3x+3y]}

-3y-{2x+3(x-y)-2x+3x-3y}

-3y-{2x+3x-3y-2x+3x-3y}

-3y-{6x-6y}

-3y-6x+6y

-6x + 3y

Answer 8

there are no absolute value bars

Answer 9

and unfortunately c) has a typo, there's an imbalance of grouping symbols

Answer 10

oh.....I understand....I thought those were absolute values...my bad

Answer 11

I got letters a and b! Thank you soooooo much! yeah there's a typo
c.) 2x-{-[9x-y)-2(x+y)]-3x+y}

Answer 12

ok thx for the correction

Answer 13

Actually there's still an imbalance, but I think I figured out what you mean


x-{-[(9x-y)-2(x+y)]-3x+y}


x-{-[9x-y-2x-2y]-3x+y}


x-{-[7x-3y]-3x+y}


x-{-7x+3y-3x+y}


x-{-10x+4y}


x+10x-y


11x-y

Answer 14

wow your fast.....

Answer 15

oh oops typo lol

Answer 16

thx texaschic101, sometimes a bit too fast (and make typos)

x-{-[(9x-y)-2(x+y)]-3x+y}


x-{-[9x-y-2x-2y]-3x+y}


x-{-[7x-3y]-3x+y}


x-{-7x+3y-3x+y}


x-{-10x+4y}


x+10x-4y


11x-4y

Answer 17

jim is good...don't you agree bottled thoughts

Answer 18

Yo're really really fast. Thank you so much you two fror helping meeee! I owe you :))

Answer 19

*You're

Answer 20

I only got 1......lol....jim deserves the medal

Answer 21

lol it's fine either way, and thx for the compliments

Answer 22

it is what you deserve.....many,many,many compliments

Answer 23

I appreciate it

Answer 24

I think thre's another typo in letter c. It's supposed to be 2x right?

Answer 25

in the final answer you mean?

Answer 26

no, the given

Answer 27

where

Answer 28

oh i see now

Answer 29

not sure how I missed that, let me fix that too

Answer 30

2x-{-[(9x-y)-2(x+y)]-3x+y}


2x-{-[9x-y-2x-2y]-3x+y}


2x-{-[7x-3y]-3x+y}


2x-{-7x+3y-3x+y}


2x-{-10x+4y}


2x+10x-4y


12x-4y

Answer 31

Weeeeee! Thanks agaaaaaaain! Math genius :)

Answer 32

lol thx, and you're welcome

glad to be of help