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no x would be 0.5 because two times 0.5 is 1 ( 2x ) and then add 7 equals 8 ( plus seven equals 8 )
It is equivalent to: 6x^2 -24x
5.(8+3)
2(9+x)>2(4+x) 18+2x>8+2x -2x -2x 18>8 no solution
It is equivalent to: 6x^2 -8x -8