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what is the substitution of 5x+2y=12 and 3x-4y=2

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AwesomeHelperviz
5x + 2y = 12
5 (1) + 2 (3.5)
5 + 7
12

1. X = 1 AND Y = 3.5 

3x - 4y = 2 
3 (5) - 4 (3.25) 
15 - 13
2

2.X = 5 and Y = 3.25