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3x-2y=11

2007-02-12 21:01:47 · 5 answers · asked by seanweimorts 1 in Science & Mathematics Mathematics

5 answers

only if you asuume x or y!
For example, say x=1, then 3-2y=11=>y=-4
say x=2, then 6-2y=11=>y=-5/2 etc

2007-02-12 21:06:29 · answer #1 · answered by Roubini 5 · 1 0

By solving, im assuming you mean putting it in y=mx + b format?

You want to start by getting Y all by itself on the left side. So subtract 3x from both sides to isolate the Y. You'll be left with:

-2y= -3x + 11

Next you'll want to divide both sides by -2, that way you'll be left with just Y on the left side. So then you'll end with:

Y= (3/2)x - (11/2)

(Now that you know have it in that format..you can plug in variables for X to find Y. And then afterwards, substitute value of Y to find value of X. However im sure that if this basic algebra, you dont need to actually solve for the variables, just put it in the correct format.)

Hope this helps!


EDIT:
When using WEBMATH as stated below, From home screen go to "Algebra" tab, under solving equations click on "one equation" enter 3x-2y in left side, and 11 on right side. In "variable to solve for" put Y. I'm sure you'll get the same answer as stated above.

2007-02-13 05:07:54 · answer #2 · answered by Kim 3 · 0 0

A single equation can only be solved for one "unknown."
You must have two equations, to solve for two unknowns, and so on.

for example, if I have x = 2y
I have to have another equation, like y = (something)

then I know that x is 2 (somethings),
or that something (which is what y is,) = 1/2 x.

2007-02-14 20:24:18 · answer #3 · answered by Charles C 1 · 0 0

You've got a single equation with two unknowns, so it depends on which variable you'd like to "solve" for. You could solve it for y so that you get "y = [something in terms of x]", or similarly solve for x to get "x = [something in terms of y]".

2007-02-13 05:05:48 · answer #4 · answered by Anonymous · 1 0

I have used webmath to answer all of my equation questions. Webmath allows you to insert your own equations and shows you how the answer was obtained. You can go to the Algebra section and enter the problem under "Simplifying Espressions" and click on "Anything Else". This will help you throughout your math course and you will not have to wait for answers.

2007-02-13 05:16:51 · answer #5 · answered by Anonymous · 0 0

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