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x-1-3\left(x+3\right)=2\left(3x+4\right)
Multiply both sides of the equation by 6, the least common multiple of 6,2,3.
x-1-3x-9=2\left(3x+4\right)
Use the distributive property to multiply -3 by x+3.
-2x-1-9=2\left(3x+4\right)
Combine x and -3x to get -2x.
-2x-10=2\left(3x+4\right)
Subtract 9 from -1 to get -10.
-2x-10=6x+8
Use the distributive property to multiply 2 by 3x+4.
-2x-10-6x=8
Subtract 6x from both sides.
-8x-10=8
Combine -2x and -6x to get -8x.
-8x=8+10
Add 10 to both sides.
-8x=18
Add 8 and 10 to get 18.
x=\frac{18}{-8}
Divide both sides by -8.
x=-\frac{9}{4}
Reduce the fraction \frac{18}{-8} to lowest terms by extracting and canceling out 2.