Question 945898: solve using substitution
2y=x+4
5+y=2x
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! 2y = x + 4
5 + y = 2x
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put the system of linear equations into standard form
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x - 2y = -4
2x - y = 5
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copy and paste the above standard form linear equations in to this solver:
http://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = 4.6666667
y = 4.3333333
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now, solve by substitution:
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x = 2y - 4
y = 2x - 5
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x = 2(2x - 5) - 4
x = 4x - 10 - 4
3x = 14
x = 14/3
x = 4.6666666666
y = 2x - 5
y = 2*(4.6666666666) - 5
y = 4.3333333333
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solution by substitution:
x = 4.6666667
y = 4.3333333
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