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Verified answer
| x + 1 | + 2x = 7✐ x+1 + 2x = 7
x+2x = 7-1
3x = 6
x = 6/3
x = 2
✐ -(x+1) + 2x = 7
-x-1 + 2x = 7
-x+2x = 7+1
x = 8
HP = {2, 8}
x+1+2x=7
x+2x=7-1
3x=6
x=2
-x-1+2x=7
-x+2x=7+1
x=8
HP={2,8}
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