Answer:
-1/7
Explanation:
2 + 6x = 1 - x
2 + 6x = 1 + -x
6x + 2 = -x + 1
6x + 2 + x = -x + 1 + x
7x + 2 = 1
]7x + 2 - 2 = 1 - 2
7x = -1
7x/7 = -1/7
x = -1/7
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