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One solution

2x+y =5

x+2y=4

multiply 1st eq by 2 rhen subtract:

4x+2y = 10

x + 2y = 4

3x = 6

x = 2

plug x into any of the above two equations and solve y = 1

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Q: Does this system of equations have one solution no solutions or an infinite number of solutions 2x plus y equals 5 and 2y plus x equals 4?
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