SOLUTION: I need help understanding how to solve x-6y= -51, 3x-7y= -54 using the substitution method. Algebra confuses me immensely. Do I solve for x first, or y first?

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Question 732037: I need help understanding how to solve x-6y= -51, 3x-7y= -54 using the substitution method. Algebra confuses me immensely. Do I solve for x first, or y first?
Found 2 solutions by Alan3354, Vladdroid:
Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website!
I need help understanding how to solve x-6y= -51, 3x-7y= -54 using the substitution method. Algebra confuses me immensely. Do I solve for x first, or y first?
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You can solve for either first. Pick the one that's easiest.
x-6y= -51 --> x = 6y - 51
Solving for y would cause fractions.
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Sub for x in 3x-7y= -54
3(6y-51) - 7y = -54
18y - 153 - 7y = -54
11y = 99
y = 9
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Sub for y into any equation to find x.
x-6y= -51
x - 6*9 = -51
x = 3
That's it.

Answer by Vladdroid(91) (Show Source):
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