Question

How do I simplify 15z/8z-2

Answer 1

Is the question\[\frac{ 15z }{ 8z } - 2\] or\[\frac{ 15z }{ 8z-2 } ?\]

Answer 2

@welcome to openstudy @anikkie

Answer 3

it's the second one I'm new to this stuff so don't know yet how to actually write it

Answer 4

It's already simplied if it is \(\dfrac{15z}{8z-2}\)

Answer 5

yea

Answer 6

oh ok thanks

Answer 7

Although you can pull out a 2, which is the LCM between 8 and 2, but that wont do anything.

Answer 8

\[\frac{15z}{2(4z-1)}\]

Answer 9

Ok I see that

Answer 10

Mmhmm :)

Answer 11

another problem I had was -20z-20 over 4z-1. so I simplified it to -5z-20 over z. is that correct?

Answer 12

\[\frac{-20z-20}{4z-1} = \frac{-20(z+1)}{4z-1}\]

Answer 13

You can only pull out the common terms between the numerator and denominator, therefore \(-5z-20\) is incorrect.

Answer 14

omg how did you get the (z+1)

Answer 15

Pull out a common multiple of \(-20\) out from both values.

Answer 16

I understand where the z came from
but not the one

Answer 17

\(-20(z)=-20z~,~ -20(1)=-20 \therefore -20(z+1)=-20z-20\)

Answer 18

got it im so bad at math and the thinking process for it. thanks

Answer 19

No problem. Any others?

Answer 20

not yet

Answer 21

Alright. Close this question, and when you have another problem you need help solving,open up a new thread :D

Answer 22

Good luck.

Answer 23

ok sure will