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2 is a solution of the equation, but not if it's an inequality.
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The inequality with the terms 2x, 3 and 7 can be written as 2x -3 = 7, 2x + 3 = 7, 2x * 3 = 7, and 2x/3 = 7. This means that the solutions are 5, 2, 7/4, and 21/2 respectively.
-2x=2y+5 +2x -2y -2y=2x+5 /-2 y=-1/1+2.5