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The given expression can be simplified to: 2x-2
The given expression can be simplified to: 2x-2
If you mean: 5x+9+7x-11 then it simplifies to 12x-2
5X = 2X + 9 subtract 2X from each side 5X - 2X = 2X - 2X + 9 3X = 9 divide each sides integer by 3 (3/3)X = 9/3 X = 3 ------------check in original equation 5(3) = 2(3) + 9 15 = 6 + 9 15 = 15 checks out
5x+18 = 2x+9 5x-2x = 9-18 3x = -9 x = -3 and y = 3