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(12x2 + 18) / (3x2 + 6) = (4x2 + 6) / (x2 + 2)
Six plus 18 divided by 3 times 4 is equal to 30.
-2x + 6 <= 4x + 18 -2x <= 4x + 12 -12 <= 6x -2 <= x
x + 12 = 18 Therefore, x = 18 - 12 x = 6
1/2 + 12/18 = 9/18 + 12/18 = 21/18 = 7/6