Easiest approach: Mult. the first eqn by 2; this results in 10x - 2y = 12. To this new equation, add the second equation:
10x - 2y = 12
5x + 2y = 3
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15x = 15, so x = 1. Subst. 1 for x in either of the given equations, and then find y from the resulting equation.
Write your solution in the form (1, ? ).