Another equation problem
Posted on: April 17, 2012 - 10:55pm
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Another equation problem
My teacher is a prick and I have not been to school in almost 17 years. I couldn't find the answer on Google or Wolfram, so I was hoping the more mathematically inclined could help me :
-19 = 3 + 4x they want the answer "simplified" as much as possible.
Damn, I always hated math. I was never any good at it.
“It is proof of a base and low mind for one to wish to think with the masses or majority, merely because the majority is the majority. Truth does not change because it is, or is not, believed by a majority of the people.”
― Giordano Bruno
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They want to know what the x stands for, in other words x=
Get all the constants together, so subtract 3 from both sides:
-19 - 3 = 4x
which is the same as
-22 = 4x
then isolate x by dividing each side by 4
-22/4 = x
so x = -11/2 or -5.5
In general, everything done to the left hand side (of =) has to be done to the right hand side.
To check that it has been done properly, plug the solution back in:
-19 = 3 + 4x
where x = -5.5
so
-19 = 3 + (4 * -5.5)
-19 = 3 + (-22)
-19 = 3 - 22
which is true, so the answer is right.
I verify this answer.
Enlightened Atheist, Gaming God.
Thanks but what does the x stand for ? 5.5. ?
So, the answer is x= -5.5 ? Is that right ?
yes
and that would be in the most simplified form correct ?
“It is proof of a base and low mind for one to wish to think with the masses or majority, merely because the majority is the majority. Truth does not change because it is, or is not, believed by a majority of the people.”
― Giordano Bruno
correct
"...but truth is a point of view, and so it is changeable. And to rule by fettering the mind through fear of punishment in another world is just as base as to use force." -Hypatia
if you need to brush up on your algebra skills, start with the simplest basics with an equation that has even numbers and no negatives. Then everything will make more sense after that. like:
2x + 4 = 24 answer x = 10
then move up to :
2x + 4 = 25 answer x = 10.5
"...but truth is a point of view, and so it is changeable. And to rule by fettering the mind through fear of punishment in another world is just as base as to use force." -Hypatia
Thanks for the help guys. I appreciate it.