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Answer:
x = 5/6
Explanation:
2/5x + 1 = x + 1/2
2/5x + 1 - 1/2 = x + 1/2 - 1/2
2/5x + 1/2 = x
2/5x - 2/5x + 1/2 = x - 2/5x
1/2 = 3/5x
1/2 / 3/5 = 3/5 / 3/5
5/6 = x