SOLUTION: x=300-y x-200=y

Question 825639: x=300-y
x-200=y
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
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x=300-y
x-200=y
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put the system of linear equations into standard form
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x + y = 300
x - y = 200
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copy and paste the above linear system in standard form into this matrix-method solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = 250
y = 50
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system matrix
1 1
1 -1
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inverse of system matrix
0.5 0.5
0.5 -0.5
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determinant of system matrix = -2
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Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
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Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
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Solve systems of linear equations up to 4-equations 4-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php
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