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Anonymous
When x = 8 it is 78.
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9x + 4 - x + 8 = 8x + 12
x2 - 9x + 8 = (x-1)(x-8)
(x+1)(x+8)
9x + 4 = 6 9x = 6 -4 9x = 2 x = 2/9
44 = 9x +8 36=9x 4=x