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the / is a division sign

Can u pls type it using the equation tab below. It is difficult to understand it like this

well h/o.. write ur answer as a fraction in simplest form. does this help?
2 X 1 X 1
--- ---
-6 -5

The answer is 1/15

ohh ok

Now using this formula try to solve yourself and I'll check if it is correct

do u multiply the -7 with the N or D?

in the 2nd problem?

You can treat it as -7
--
1
So you multiply -7 with the numerator group

oh okay

soo
98
--
-54

Correct!!
But something more needs to be done

simplify? idk how to do that with this fraction

First, we hv to reduce it to lowest terms
Second, make the denominator positive

OK,
Both are even nos and hence divisible by 2
So go ahead and divide both by 2

Then multiply this by -1/-1 to make the denominator positive

Done????

49 -1
--- x ___
-27 -1

soo that means the answer is this?
-49
---
27

BINGO !!!!
You got the hang of it !!

yay! is that simplest form?

Now I'll teach you how to reduce it to lower terms easily

okay :)

Yes it is because 49 is 7 x 7
and 27 is 3 x 3 x 3
So both numbers do not hv any common factor left

okay thank u

your question was 2 x -7 x -7
--- ---
9 -6

We modify it to 2 x -7 x -7
--- --- ---
9 1 - 6

Following me???

ok now i have another ?
is -3(3x-u)+(2u-4x) simplified to -9?

yes

is that the simplified expression to that expression?
yes.thank u for explaining that to me.

How did u arrive at -9 ??

-3(-3x-u)+(2u-4x)
-3(-3x)+1+(-4x)
-3+1+-7

i did it wrong

but i was supposed to distribute

wait..it said that wasn't correct.

What's the ans u hv????

i got 5x-1u

1u ? :|

-3(-3x-u) + (2u-4x)
(9x-3u) + (2u-4x)
-1u + 5x
5x + -1u
5x-1u

Then u gave me the wrong question the first time around!!!! Go and check....

i did! i'm sorry!! ahaha i put 3 and it was supposed to be -3 i think

but am i correct (with the problem i just did)

"5x-1u " :\
why is there a 1 in front of the u ?

But her answer is wrong anyway.....

yeh , doesnt mean you cant correct notation

agreed :)

yeah but for my learning purposes i sometimes put the -1 so i don't lose track.

but anyway..i see what u did harkirat ... idk what the crap i did! haha

No sweat, we all learn by making mistakes and correcting them

@elecengineer
R u located in the US??

australia

R u an Indian by any chance??

no, not asian either

but alot of the electrical engineering lecturers at my uni are

im white lol

Just asking, hope u didn't mind

C'mon lauren, thats not nice

i dnt care what they say ^

but seriously, if you are in high school you shouldnt need to write the 1s

C'mon friends, let us change the topic

Do u need to ask anything else lauren??

agreed. i don't like negativity. and yes...one sec please.

if you click the link it makes it bigger.

^ thats first year uni math?
cant be

what do you mean by "college"

but i do go to a university.

k... thats like the stuff we do in year8 in high school in australia

i got -11y+8

wow :p

Bingo !! Its correct , the working as follows
-4 (3y - 2) + y = -12y + 8 + y
= - 11y + 8

=)

something much more complex

k u go do that. lol

Ok lauren, give this a try
2(x+ 3y) -7(2y - 5z) + 3(2x - 3y +z)

Focus and you'll do it right

k h/o

C'mon elecengineer, giv her a break
U r suggesting a mosquito weight fights Mike Tyson :D

8x-23y+38z

not quite

lauren, redo it and keep + and - signs in mind while expanding

it wasnt the signs that caused the mistake :|

8x-17y+38z
and i missed one of the y terms while comining like terms.

combining*

Good, u did it!!

cool :)

Maths needs constant/regular/focussed practice

Find more such sums and keep doing them

thanks harkirat....are these like terms?
8x and 8x^2

no

do u know why??

bc of the exponent

Correct,
In Algebra, for like terms we look at the variables and not the coefficient

For eg if u hv these four terms
-5 x^2y^5z , 7x^2y^5 , 2zy^5x^2 , -11 xyz

k got it

The two like terms here are
-5 x^2y^5z , 2zy^5x^2 becoz both hv x^2 y^5 and z as algebraic factors

Got it??

yep!

here the operative word is ALL
ALL variables same and their respective powers same