i need help with this problem because i cant look the answer up in the back of the text book

yeah go ahead dear friend

for christmas steve bought 5 more cds than dvds as presents for his freinds. he bought 21 in all . how many cds did he buy?

means number of cd together with dvd is equal to ---------how much

If you write these as equations, it helps in the analysis. CD=DVD+5 CD+DVD=21 CD=21-DVD 21-DVD=DVD+5 16=2DVD DVD=8 Which means CD=13. We then check if the solution satisfies the original equation. 8+13=21 and there are 5 more CDs than DVDs :)

So CDs = DVDs + 5 CDs + DVDs = 21 Substitute. DVDS + 5 + DVDs = 21 2DVDs = 16 DVDs = 8 CDs = 13

onn the paper ir says that step1. define veriable step2. right question step3.solve step4.wright concution sentence

so u have variable CD & DVD

and u purchased 5 CD's more than the DVD so No. of CD = No. of DVD + 5

Now total no is equal to 21

so on my paper i should have x=x+5

right

now what is x = it is number of dvds

Not x=x+5, x=y+5 is more appropriate.

yes dear helper cd is more No. of CD = No. of DVD + 5

ok that was a good tip polrek

now i get it

we can keep No. of CD = x +5, No. of DVD x

x = x - 5 -x -x -------- -5 whould be the answer

no no we have to add number of cd with no of dvd

i.e., x + x + 5 = ?

7x

no wait

no 5 can't be added into x because it dint have x

2x+5

thats the answer

which is equal to?

what do you mean to equal

means total i.e., no. of cd + no. of dvd = ?

read question

oh

5 divided by 2

2.5

im confused

no dear 2x+5 = 21

now solve it

i forgot the 21 i didnt see that sorry

answer is 16

now tell me x is equal to ?

9

no look at the equation carefully

2x = 21 - 5 => 2x = 16 => x = 16 /2 => x = ??

answer is 8

gr8 u did it now u got to know how to reach this point

but x is number of dvd so number of cd will be equal to ??

i feel like an idiot because it was so obvios but i got it right finally thank you very mutch

13 cds

no of cd = no of dvd+ 5 no of cd = x+ 5

i want to give u another medal but i cant not possible here

if u having any other question then share........

i wish i could give you a real well the one with the the rectangle i still ned help with

yeah go ahead by the way whts the time there

i have 408=134+1x

5:50 im in virginia

ok that one perimeter = 2 * (L+W) => 408 = 2*(L+W)

i had seen a movie that was from virginia...... A Walk To Remember...................ultimate one

408 = 134 + X -134 -134 ------------- 274=1x --- --- 1 1 x=274

solve the equation...b4 i complete my cigarrette give me answer 408 = 2*(L+W) L is given in the question

408 = 2 x (L+W)

L

=134

134X274=36,716cm sqaurd

yes L = 134 L+W = 408/2 L+W = ??

134+274=??? what does the /2 mean

does that mean sqaurd

means 408 divided by 2 =

204

then 204 = 134 + w

oh 204-134=70 70+134=204

gr8 so width is equal to ??

274

no

204

no 70 is the width

yes u r right. 70 cm is the width hey can i ask u sumthing if u dont mind

so 134 x 70

you can ask

no it will give u the area of the rectangle........ whts ur good name and how old u r?

joey pedro 14 9th grade

nice name

yeah you whant the area of the rectangle the question says that you to find the area

yes then area is equal to 134*70 = 9380 cm^2

yes finally.

next question

are you a teacher ar a student? you should be a teacher

i have too go dinner time

yeah u got it ryt.....but i dont teach school kids i teach old post graduate fellows

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