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Anonymous
2x-1=9
2x=10
x=5
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2x+1 = 9 2x = 9-1 2x = 8 x = 4
9(2x - 1)(2x + 1)
6x - 9 + 2x + 1 = 8x -8
If you mean: -3x-5x+1+8x-2x-9 then the result is -2x-8
6x + 9 = -3 6x/3 + 9/3 = -3/3 2x + 3 = -1 2x + 3 - 3 = -1 - 3 2x = -4 2x/2 = -4/2 x = -2