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please help I am not good at solving linear equations I need clear written and shown (work shown) steps and explanation of how to solve

please help I am not good at solving linear equations I need clear written and shown (work shown) steps and explanation of how to solve for x and y and how to graph it

3x+4y=120

2x+1y=60

how to do solve for x and y and how would you graph it?? would you get 4 different answers ???

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