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I am still not getting it so need more help

ok, so lets do the second one

ok i tried but got lost

well when i did it it was a little different but it did not look right but had the same answer

for the last one i started with 3x-7(-6)=21

then i had 3x-42=21

ok wait a sec

whats -7 *-6?

don't I replace the y with -6?

yes, but what is -7 times -6. can you hold up for a sec

sure

you get positive 42

so you should have 3x-42=21

no, its going to be
3x+42=21 because we got positive 42, not negative 42

ok i see

yes
3x+42=21, what do we do next?

get x by itself by using 3

OK WAIT

we still have that 42 there, and we need to get rid of it,
so how do we get rid of that 42:
3x+42=21

3x +42 -42 = 21 +42 - 42

there we go! and what do we get?

3x=21

wait whats 21-42? -21!

huh?

I thought the 42s cancelled each other out

yes, but its not 3x=21 its 3x=-21

ok I don't get it

so this is what you got
3x +42 -42 = 21 +42 - 42

right

why did you add 42 both sides? you were only supposed to subtract 42 on both sides. try it again,

3x +42 -42 = 21- 42 is what you should get

ok i put an extra one in there

exactly so figure it from this:
3x +42 -42 = 21- 42

ok so 3x +42 -42 = 0

21 -42= -21

yes so it should be
3x=-21

so (-21,-6) is the ordered pair

we stil need to find x! we were left with
3x=-21 !
remember we need to get x by itself!

ok so we us 3 on both sides

we divide 3 by both sides

damn this thing hangs up on me a lot. so we should end up with x = 21

whats -21/3?

-7

so x=-7.
gosh, what grade are you in? and math level?

college 0.0i learned this in 6th and 7th.

ya I know but I have never had algebra before

and im in 9th. yaaay! i feel so smart!

when i was in high school we did not have algebra and geometry. it did not exist

so when i was in 12th they were just starting it as an elective.

I guess that is why it is so hard for me.

lol, so do i! agh sooo much work!

ya but you understand this. I son't understand any of it. I just started in Jan to learn this junk

ya, this si easy. but im doing precal, and ap microecon, and ap Human Geogarohy, and ap bio