If you mean: -2x+8+20 then it can be simplified to 28-2x
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2x - (8 x 6) = 20 2x = 20 + 48 2x = 68 x = 68/2 x = 34
2x - 3 = 2x - 52x = 2x - 22x - 2x = -20 =/= -2Zero is not equal to -2 so the answer is no solution.
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No. If that's -2x + 7 = -9 -2x = -16 x = 8
2x = 8 Divide both sides by 2: x = 4 So, the solution set is {4}