4x + 2y = 6 (first equation x 2)
4x + 2y = 6 (second equation rearranged)
No unique answer exists
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4x + 2 + 2x - 2x = 14 4x = 14 - 2 4x = 12 x = 3
4x - 5 + 2x = 37
4x - 7 = 2x + 15 4x = 2x +222x = 22x = 11
13x
2x+17 = 4x-3 2x-4x = -3-17 -2x = -20 Answer: x =10