6x * 9x = 6 * 9 * x * x = (6*9)*(x*x) = 54*x2
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9x-11 = 6x+1 9x-6x = 1+11 3x = 12 x = 4
If: 9x+7 = 6x+25 Then: x = 6
6x + 47 = 9x + 11 6x + 36 = 9x 36 = 3x 12 = x
it's an easy one :)-6 - 6x = 9 - 9x-6x + 9x = 9 + 63x = 15x = 15/3X = 5
9x-19=6x+2 so 3x=21 and x=7