Question

Solve the following equation for z: 15 = 10z/[2-(7x4)]

Answer 1

Do you know what to do first?

Answer 2

You are simply isolating the exponent z on one side of the equation

Answer 3

no, this is from my general chem lab 1 quiz

Answer 4

Really? Because this is just basic algebra, but you do need to have a strong grasp of algebra to be a chemist so meh smeh

First step, is getting rid of what is in the denominator on the right, do you know how you could go about that?

15 =10z/[2-(7x4)]

Answer 5

by getting rid of it I mean bringing it to the left side of the equation and just leaving 10z on the right side

Answer 6

I haven't did that in some years. I appreciate the help though

Answer 7

Equal signs simply means that the expressions on both sides of it are the same thing (they are equal).

As long as you do to one side what you do to the other the equality is maintained, which means you can divide, multiply, subtract etc one side of an equality by anything as long as you do it to the other side.

For instance

15x = 10y/(3-x)

if we wanted to isolate y it would be as simple as first realizing that you can if you divide something by itself it is equal to 1 and anything multiplied by 1 is itself.

for example

4x/4x = 1
(2-3x)/(2-3x) = 1

(3333+z+y+z)/(3333+z+y+z) = 1

so we can apply this rule to the above equation,

(3-x)*15x = (3-x)*(10y/(3-x))
=
(3-x)*15x = (3-x)(10y)/(3-x)
(3-x)*15x = 10y*1
(3-x)*15x = 10y

Answer 8

do you follow?

Answer 9

I understand

Answer 10

so can you solve your problem now?

Answer 11

no lol, im still alil lost but i understand alil

Answer 12

well can you do your first step?

Answer 13

now

Answer 14

The step I mentioned above, I dont mind walking you through this

Answer 15

would it be (2-{7x4)]15=10z

Answer 16

YES!

Now ask yourself how can you get rid of the 10 from the right side of the equation

Answer 17

divide both sides by 10

Answer 18

Right!

Answer 19

Problem solved

Answer 20

This stuff is easy right

Answer 21

whats the answer lol, its just gonna be [2-(7x4)] over 15

Answer 22

write out what you think the answer is?

Answer 23

you just need to divide both sides by 10 and you are done

Answer 24

All you have to do is isolate z on one side of the equation, can you show me your final answer?

Answer 25

your answer is wrong btw,

You are at this step,

(2-{7x4)]15=10z

you said divide both sides by 10 makes sense,

(2-{7x4)]15/10=10z/10

(2-{7x4)]15/10=(1)z

(2-{7x4)]15=z

That is your answer

Answer 26

make sure you understand what I did this stuff is fundamental and wont ever go away if you plan on doing any technical job

Answer 27

although maybe not idk

Answer 28

oops,

(2-{7x4)]15/10=z

is the final answer forgive me

Answer 29

I hope you understand