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r u there

yeah

can u help me with my homework its algebra 1

Okay I can try, am I supposed to do all of that?

ill do it with u though

what is the paper/book called?

springboard

the green/rainbow one?

ya why

I cant read all of the picture

which one

13

13 right?

yeah mostly just the word problems

the 2 cutoff words are equation and equal

this is hard

i know

srry

i tried to understand but its complicated

ok

anybody there who can help me

yay @jim_thompson5910 ur here

which one are you stuck on?

nvr mind i dont need help on 28

@jim_thompson5910 , @dan815 r u there

ok

lets start with 13-15

is the problem cut off or something?

no

@dan815 where did you get those values from?

just made it up for an example, instead of 5 i think ninja has to use a variable there

the variable is n

which is the number of visits per year

he left

set that equal to the 5 dollar yearly fee to get
k*n = 5

make sense?

so thats the equation for 13, right?

do you see how I formed it?

yes

what about 14 and 15

I think they want you to solve for n

in #14

oh let me try

is it 5?

get n all by itself in the equation `k*n = 5`

oh let me try it that way

how do u divide 5 by k

nvr mind how do u get n by itself

you just leave it like that, so you'd have
\[\Large n = \frac{5}{k}\]

that's what you'd have after dividing both sides by k

and then

but we don't know what k is so we leave it like 5/k

ok so thats #14

is it?

yeah

ok

#15

how do u do number 15

nvrmind i know that

#17??

what would be the answer to #15

actually i dunno could u help me

u there

give it a try and tell me what you think

is it 5 divided by the money.......i dunno!

what does n represent

the # of visits??

yes, so 5/k represents the number of visits (because it's equal to n)

ok thank u very much

no problem

what about #17

8x + 5 = 3x + 15
solve for x

ok

bye

wait wat

no wait

r u there

can you get all the x terms to one side? and everything else to the other side?

let me try

is it 8x+3x = 5+15

to move that 3x over, you have to subtract 3x from both sides

:O

you need the 3x on the right side to turn into 0x or 0
3x-3x = 0x = 0

|dw:1441242757695:dw|

|dw:1441242784001:dw|

|dw:1441242807116:dw|

oh ok then it will be 5x+5=15

r u there @jim_thompson5910

|dw:1441242986486:dw|

i was right

Now subtract 5 from both sides
|dw:1441243014153:dw|

|dw:1441243025086:dw|

it will be 5x=10, right?

my final answer will be x=2

yes

yay!!

now can u help me with #26?

what time is it for u?

what do you have so far for #26 ?

nothing cause i dont get it

u there?

i need help!

have you heard of the distributive property?

yes

I am not sure if I know this sorry....

oh now i get it the 2nd step is distributive property, right?

yeah because `2(x-1)` turns into `2*x+2*(-1)` which becomes `2x-2`

same with the `-3(x+2)`

ok what about the other steps

how are they simplifying line 2 to get line 3?

2x-3x - 2- -6
=-1x - 8

the other side stays the same

how is that left side simplified? what happened?

You got this slice...

i combined like terms

thanks for the encouragement @me10000 i would have been a goner if it wasnt for @jim_thompson5910

@jim_thompson5910 r u there

`i combined like terms` good
so the reasoning is simply "combine like terms"

there's no fancy math term needed

Yep pm me if I can be of any assistance... With anything there than this...

lol ok

next step looks more complicated

what's the change from line 3 to line 4?

let me see

they are trying to get the variable alone

or are they??

yeah that's the ultimate goal

focus just on line 3 and line 4
what changes?

they are adding 4x to both sides

yep

they are using the additive property of equality

additive property of equality
if a=b, then a+c = b+c

oh now i get it

line 5 looks like the answer of line 4

what changed here

i dunno

r u there

did u leave?? oh no!

what changed from -1x+4x-8 = 8-4x+4x to 3x-8 = 8
look closely

nvrmind ur here i got scared

-1x+4x became 3x

so you combined like terms

same for -4x+4x = 0x = 0

oh ok

Let me guess: the next line is additive property of equality, right?

why would it be that rule?

Because they are adding 8 to both sides. Am I right?

good

Yay!!

I'll be right back.

the next line is combine like terms

ok

tell me when ur back

r u there yet

hello??

`the next line is combine like terms` correct

the next line is division property of equality, right?

correct

the last step is combine like terms, right?

no, it's to convert the improper fraction to a mixed number

oh ok thanks

whats #27

u there

what did you write in pencil? I can see something faintly written

thats for part a of the question. its this: 4w+12(w-1)=36

what does w represent

im sorry but i forgot it was for

how did you form the equation?

i copied from my teacher

and you don't remember how the teacher got it?

the teacher was ina hurry

give a guess what w represents

the total distance?

w = walking
w is the time spent walking

in hours

so w-1 is the time spent biking (1 hour less)

oh ok

if you walk for w hours, and you walk at a speed of 4 mph, then how far do you walk?

4*w

u there

yep, how far do you go when you bike?

12*w

is it?

not just w though

then what?

is it 12*w-1

the 12(w-1) like you wrote

12 times (w-1)

yes i was right the second time

so the two distances add to get `4w+12(w-1)`

that's how he got that left side

now we find the value of w, right?

yeah for part b

im doing it

i found it: x=3

am i right?

w = 3 is correct

so he walked for 3 hrs and biked for 2 hrs (since w-1 = 3-1 = 2)

how did he walk 3 hrs though?

you just solved to get w = 3

ya so?

w represented the number of hours walked

oh ok thanks now i get it.

thnks for everything bro ur the best.