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EternalSummer247

USA
Joined: Jul 6, 2007
Posts: 36
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Help!!!

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Is there ANY way to solve this and get a AND x?

3a+4x=70

I tried it through online calculators and the furthest they can simplify it is...

a = 23.33333333 + -1.333333333x

with no solution for x. Is it undefined?

[Jan 12, 2008 12:10:32 AM]

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pskinner

Joined: Apr 2, 2005
Posts: 797
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Re: Help!!!

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It depends. Usually, x is a variable and the letter a is constant, so you can solve for x: 4x=70-3a, so x=70/4-3a/4.

Now, if both x and a are variables, then there are infinitely many solutions. Just use our equation plotting calculator, replacing a with y:

3y+4x=70

and you will see a line, and any point on the line solves the equation.
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Principal Skinner

[Jan 12, 2008 12:28:40 AM]

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