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9966 [12]
3 years ago
15

If you were to solve the following system by substitution, what would be the best variable to solve for and from what equation?2

x+6y=9
3x-12y=15
Mathematics
1 answer:
aivan3 [116]3 years ago
8 0

The second equation because they all have a common factor of 3. You can get x by itself. However, with the first one, you'll end up with fractions instead.

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Step-by-step explanation:

<u>Errors in Algebraic Operations </u>

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The first expression is

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Let's arrange into format:

\displaystyle \frac{1-x}{(5-x)(-x)} =\frac{x-1 }{ x(x-5)}

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\displaystyle \frac{5}{s}\times \frac{2}{5} =\frac{2}{s}

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