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- anonymous

y=-5x-6
y=-8x-6
system linear

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- anonymous

y=-5x-6
y=-8x-6
system linear

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- anonymous

- phi

This looks like you can do the same thing as last time.
can you write down the equation we have to solve?

- anonymous

|dw:1352930564084:dw|

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- phi

yes, I know that. but both right hand sides equal y so they equal each other.
can you write that down?

- anonymous

no, i still not gettin it because its a lot to remember

- phi

y=-5x-6
y=-8x-6
if -5x-6 equals y, you can replace y in the 2nd equation with -5x-6. Can you write that down?

- anonymous

go it written down

- phi

what do you have?

- anonymous

am i doing y=-5x-6

- phi

you have 2 equations
y=-5x-6
y=-8x-6
the 1st equation says y is -5x-6
that means you can replace y in the 2nd equation with -5x-6. after you do that what is this new equation?

- anonymous

-8x-6

- phi

what happened to the other side and what happened to the = ?
If we had
y= A
and
y= SOMETHING
we can replace y with A in the 2nd equation:
A= SOMETHING
can you use that same idea with
y=-5x-6
y=-8x-6

- anonymous

sorry so it would be -8x-6=-5x-6

- phi

yes. now that you have an equation, you can find x
I would start by adding +6 to both sides
-8x -6+6 = -5x-6+6
can you simplify this?

- phi

I would simplify -6+6 to 0

- anonymous

okay, i go that then whats next

- phi

what do you have so far?

- anonymous

-8x+0=-5x+0

- phi

yes and you can simplify -5x+0 , right?
what do you get?

- anonymous

-5or 5

- phi

I get
-8x= -5x
if you add +8x to both sides you get
8x-8x = 8x-5x
of course 8x - 8x is 0 (you have 8x and take away 8x, to get 0)
0= 8x-5x
on the right side, you have 8x and take away 5x, what do you have left?

- anonymous

@jackyluvv would you mind helping me with one more

- phi

@jackyluvv please read the Code of Conduct

- anonymous

sorry @phi if i did anything wrong

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