I have to solve for z
The equation is:
4x + 10yz = 0
I don't need the answer, I need to be able to understand how to do the problem, or atleast how to start it.
Thank You.
2007-08-18 18:43:52 · 11 answers · asked by Dan 3 in Science & Mathematics ➔ Mathematics
Ok I'm in fricken Algebra 1 but I think I will be able to explain this. how you start is by saying:
x=10yz/4
y=4x+10z
z=4x+10y
Now you can use any one of these to start it. like for example if you use x you plug in 10yz/4 like this:
4(10yz/4)+10yz
then in that you plug in for y and z and so on. I am SOO sorry if this is wrong and you wasted your time reading it but I hope it is right!
BTW i have never done 3 variable things just 2, but I used the same basic idea
2007-08-18 19:23:14 · answer #1 · answered by Anonymous · 0⤊ 2⤋
To solve for z, you simply need to isolate it from the other variables. You won't be able to find a numerical answer without more information, only z in terms of x and y. Just treat the variables as if they were numbers, you can add, subtract multiply and divide them using the same rules as other numbers. If you see any combination of letters and numbers together, they are multiplied (i.e. 4x = 4*x)
Since you actually want to understand the problem, I'll walk you through it step by step.
First, take the X over to the other side of the equation by subtracting 4x from both sides:
10yz = 4x
Then divide both sides by 10y to get your final answer
z = (4x)/(10y)
2007-08-18 18:54:33 · answer #2 · answered by Bigfoot 7 · 0⤊ 1⤋
The first thing is to remove the part that's not being multiplied, the 4x. To do that, just subtract 4x from both sides. Now on one side of the equation you have 10yz. To get z by itself, you have to remove what's attached. To do that, divide both sides by 10y. Z will be alone on one side of the equal sign.
2007-08-18 18:50:28 · answer #3 · answered by andrea_bocelli_fan1 3 · 2⤊ 1⤋
First subtract both sides -x4
now divide both sides by 10y
and your equation should look like this
z = -4x/10y
z = -2x/5y
You can also substitute each of these varaibles to solve for x and y.
2007-08-18 19:08:14 · answer #4 · answered by badeel1 1 · 0⤊ 1⤋
4x + 10yz = 0
Transfer 4x to the other side such that 10yz remains.
10yz = - 4x
Divide the other side with 10y.
z = - 4x / 10y
Reduce 4x/10y to lowest terms.
z = - 2x/5y
z = - 0.4x/y is also acceptable.
2007-08-22 14:41:29 · answer #5 · answered by Jun Agruda 7 · 3⤊ 0⤋
In order to solve for z, we treat our work just like an equation in one variable. The only difference is that our answer instead of looking really neat and simple, like:
x = 2
Will look more like:
x = 4z + 5y/w
Both equations solved for x, but one of the equations had other variables in it. doesn't mean we can't solve for a variable, just means the answer's not simply a number.
Look at your equation.
when you solve for a variable, don't you rid yourself of anything added or subtracted first? Then don't you rid yourself of anything multiplied or divided by the variable next?
It's no different here, just that your answer will look rather strange.
2007-08-18 18:51:34 · answer #6 · answered by douglas 2 · 0⤊ 2⤋
4x + 10yx = 0
2( 2x + 5yz ) = 0
2x + 5yz = 0
5yz = -2x
z = -2x / 5y
2007-08-19 01:58:29 · answer #7 · answered by 痴心情长剑 3 · 0⤊ 0⤋
10yz=-4x
z=-4x/10y
z=-2x/5y
2007-08-18 19:29:50 · answer #8 · answered by Anonymous · 0⤊ 0⤋
4x+10yz = 0
10yz = -4x
z = -4x/(10y) = -(2x)/(5y)
2007-08-18 18:50:11 · answer #9 · answered by Bob R. 6 · 1⤊ 1⤋
4x = 10yz
y = 4
x = 10
Now figure it out.
2007-08-18 19:03:57 · answer #10 · answered by Anonymous · 0⤊ 4⤋