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Yes, a relatively simple problem (as said by my math teacher) but I can't figure out the formula/our teacher thought we would know this from 7th grade. (which I don't)
If someone could explain the formula for this sort of problem, it would greatly be appreciated.
Oh and I'm new here.
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Hi Don Ventresca,
3x+5y=15
This is an equation in two variables (x and y) of degree 1.
For solving two variables, minimum of two equations are required.
These are called simultaneous equations.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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So, subtract 3x from both sides to solve for x? 5y=15-3y?
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This has an infinite number of solutions i.e. every point on the line y = -3/5x + 3.
Does the question specify that x and y are integers? (this still has an infinite number of solutions and all of them lie on that line, but at least it actually gives some work to do).
Last edited by Daniel123 (2008-12-17 03:42:25)
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No, x & y are a undefined number, thanks to you Daniel, I may not fail my math test tomorrow. But don't you need to divide out the 3?
Last edited by Don Ventresca (2008-12-17 04:14:37)
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Don he doesnt need to divide out the three.
Daniel did this:
Last edited by careless25 (2008-12-17 11:34:47)
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