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How do you work out the answer to the question 2x plus 5y equals 8 4x-3y equals 3 as a simultaneous equation?
Wiki User
∙ 14y ago
2x + 5y = 8
4x - 3y = 3
You are working with a system of equations, containing 2 variables. There is no need to use a matrix nor any complex method, just simple elimination:
2(2x + 5y) = 2(8) = 16
4x - 3y = 3
4x + 10y = 16
4x - 3y = 3
Subtract both equations:
13y = 13
Divide by 13:
y = 1
Plug it back into the original equation:
2x + 5(1) = 8
2x = 8 - 5 = 3
x = 3/2 = 1.5.
Therefore, your ordered pair is: (1.5, 1).
Wiki User
∙ 14y ago
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Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals", "squared", "cubed" etc. Please use "brackets" (or parentheses) because it is impossible to work out whether x plus y squared is x + y2 of (x + y)2.
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