...4x-(9-3x)=8x-1...
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Answer:
X=-8
4x-(9-3x)=8x-1
4x - (9) --(3x) = 8x - 1
4x-9+3x= 8x - 1
7x-9=8x-1
-x-9=-1
(+9 to each)
-X = 8
(divide -1 from each side)
x=-8
(-8x from each side)