Question

medal and fan

Answer 1

Hello @bkjbhkjbnm325 ! Welcome to OpenStudy.

What's your question?

Answer 2

What is the value of z for the equation fraction 1 over 4z = −fraction 7 over 8 + fraction 1 over 8z?
−3 −7 3 7

Answer 3

\(\Large\frac{1}{4z}=-\frac{7}{8+\frac{1}{8z}}\)

Like that?

Answer 4

idk i just need help on it

Answer 5

Your first step would be to cross-multiply. Do you know how to do that?

Answer 6

no its 1/4z=-7/8+1/8z

Answer 7

Oh, I see.
\(\Large\frac{1}{4z}=-\frac{7}{8}+\frac{1}{8z}\)

Answer 8

Okay, that means your first step would to find the lowest common multiple of the denominators.

Answer 9

Do you know how to do that?

Answer 10

Hint: one of the denominators is already the lowest common multiple

Answer 11

yea

Answer 12

yes

Answer 13

Okay, so what is it?

Answer 14

yea

Answer 15

the 1/8?

Answer 16

is it -7??

Answer 17

No, it's not.

Answer 18

The denominators are 4z, 8, and 8z. Notice how 4z, 8, and 8z are all factors of 8z.

Answer 19

yea

Answer 20

So, your goal is change the fractions so that they all have a denominator of 8z.

Answer 21

can you do that?

Answer 22

kinda

Answer 23

show me, and i'll correct if need be

Answer 24

thats all i got