Can someone help with 7th grade algebra? i understand, but i still need help

- anonymous

Can someone help with 7th grade algebra? i understand, but i still need help

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- schrodinger

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- anonymous

sure

- anonymous

thanks. variables and percentages are difficult fot me

- anonymous

have u got any question with u ?

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- anonymous

no, im sorry

- anonymous

Then how am I supposed to exlain...if do not have any questions

- anonymous

i do! can't you just make up a problem? gooses >:(

- anonymous

ok

- anonymous

thanks

- anonymous

x + 5 = 6 ... something like this?

- anonymous

yeah. that would be 1. right?

- anonymous

ok... we need to solve for x...for this we have to subtract anything which is on left side...in this case we have 5 ...
so x +5 - 5 = 6 -5 ... u got it?

- anonymous

i think so?

- anonymous

:(

- anonymous

ok, so i just thought that you went like "Ok, so it is x + 5 = 6, so i can flip it around, to where it makes 6 - 5 = x, and the answer would be one" thats just how i think :/

- anonymous

ok so are you doing Pre-algebra? is tht wat ur school calls it?

- anonymous

yes.... i'm trying to get to just plain algebra too because i am really slow when it comes to math

- anonymous

ya same here but i rocked it when i took pre agebra all A's All year. idk why... anyways so u say u dont have a problem but im in a much bigger math class than that right now so i cant make up a problem.... so u give me one and i can help!

- anonymous

um ok.... say if it was like 4t - 6 = 27 ¿:ı somethin like that. i will brb i need to go make some food... it will take like one minute

- anonymous

ok imma rite the steps the solve that problem it EASY

- anonymous

k back

- anonymous

so the problem is 4t - 6 = 27
and ur trying to find the value of T.
The first step is:
4t - 6 = 27
+6 +6
4t = 27 + 6
^
33
4t = 33
4 4
The fours cancel out so that t = 33 / 4
^
t = 8.25
Get it kinda?

- anonymous

uh...

- anonymous

?

- anonymous

whats thr +6 +6 thinggy?

- anonymous

thats just a step u need to do so that you can find what t equals. Bc 4T - 6 = 27 so that to find t u have to find oh well nvm

- anonymous

i'm sorry

- anonymous

i'm stupid :/ i suck at ,ath

- awhite

basically if you have b+2=3 and you want to solve to b, to get rid of the 2 on the right hand side of the ='s sign, you have to subtract 2 from both sides of the equation.
so you have:
b+2-2 = 3-2
b+0 = 3-2 = 1
so b=1

- anonymous

that makes some sense

- awhite

basically whatever you do to one side of the equation, you have to also do to the other side

- awhite

so if you have 2*a = 10
and you need to solve for a
then you need to divide both sides by 2 to get rid of the 2 multiplying the a,
and you end up with
2*a/2 = 10/2 = 5
so a = 5

- anonymous

¿:ı i understnad most of that

- awhite

so could you solve for c in:
2*v +3 = 23 ?

- awhite

sorry solve for v!

- anonymous

um yes.. so .... uhh

- awhite

where do you think you'd start?

- anonymous

at the 2*v right? can you turn it around?

- awhite

It would be easier to start by getting rid of the 3 on the right hand side.

- anonymous

ok. so, because it is a positive you would subtract right?

- awhite

yep

- anonymous

so, 2*v +3- 3 = 23 ?

- awhite

subtract from both sides :)

- anonymous

oh yeah :) 2*v +3- 3 = 23- 3 would = 20 so far right?

- awhite

yep

- anonymous

k so what would you do next?

- awhite

well then as you have 2*v = 20, you want to get rid of the 2

- anonymous

um would you do the same thing? but ddividing?

- awhite

exactly. divide through on both sides.

- anonymous

k so... i'm sorry i suck at division. whatt would you divide by?

- awhite

so because you want to get rid of the 2, you divide through by 2. ie:
2*v/2 = 20/2

- awhite

does that make sense?

- anonymous

yes.. but why would you keep the *v ?

- anonymous

i'm sorry :/

- awhite

you are solving for v, so you want to end up with v on one side, and everything else on the other side of the equation.

- anonymous

oh. so... you would end up with 1 right? but on the right side it would be 10.

- awhite

yeah, because v*1 = v :) so v = 10 is the answer

- anonymous

sweet! thanks (:

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