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2x+3=9x 3=9x-2x 3=7x x=3/7
2x + 3= 9.X=
2x2 - 9x = 18 2x2 - 9x -18 = 0 (2x - 18)(x + 9) x= -9 and 9
10 + 9x
x2-9x = x(x-9)