If the x is a variable then it could only be simplified to 2x5-60. If the x is supposed to be a multiplication symbol, the answer is negative 50. Ps: If you use multiplication symbols use *
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2x - 3 = 2x - 52x = 2x - 22x - 2x = -20 =/= -2Zero is not equal to -2 so the answer is no solution.
-12x
2x - 2y8 is an expression. It is not an equation and so cannot have a solution.
2x + 4 is an expression, not an equation. There can be no solution set for an expression.
If you mean: -2x+8+20 then it can be simplified to 28-2x