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x-5-2x-2=20-4x
-x -7 = 20 -4x
3x =27
x=9
x - 5 - 2x - 2 = 20 - 4x
-x - 7 = 20 - 4x
-x + 4x = 20 + 7
3x = 27 / :3
x = 9
x-5-2x-2=20-4x
-x -7 = 20 -4x
3x =27
x=9