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If: 3x-1 = 11 Then: 3x = 11+1 So: x = 12/3 = 4
3x - 1 = 11 so 3x = 12 so x = 4, so x^2 + x = 16 + 4 = 20 3x=12 so therefore x=4 x2 + x = 16 + 4 = 20
3x * (x - 4) = 3x*x - 3x*4 = 3x^2 - 12x.
3x+4y = 17 -3x -3x 4y = -3x+17 Divide each TERM by 4 y = -3x + 17 4 4
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