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3\times 3\left(8x-3\left(x+4\right)\right)=4\left(-x\right)c
Multiply both sides of the equation by 4.
9\left(8x-3\left(x+4\right)\right)=4\left(-x\right)c
Multiply 3 and 3 to get 9.
9\left(8x-3x-12\right)=4\left(-x\right)c
Use the distributive property to multiply -3 by x+4.
9\left(5x-12\right)=4\left(-x\right)c
Combine 8x and -3x to get 5x.
45x-108=4\left(-x\right)c
Use the distributive property to multiply 9 by 5x-12.
4\left(-x\right)c=45x-108
Swap sides so that all variable terms are on the left hand side.
-4xc=45x-108
Multiply 4 and -1 to get -4.
\left(-4x\right)c=45x-108
The equation is in standard form.
\frac{\left(-4x\right)c}{-4x}=\frac{45x-108}{-4x}
Divide both sides by -4x.
c=\frac{45x-108}{-4x}
Dividing by -4x undoes the multiplication by -4x.
c=-\frac{45}{4}+\frac{27}{x}
Divide 45x-108 by -4x.
3\times 3\left(8x-3\left(x+4\right)\right)=4\left(-x\right)c
Multiply both sides of the equation by 4.
9\left(8x-3\left(x+4\right)\right)=4\left(-x\right)c
Multiply 3 and 3 to get 9.
9\left(8x-3x-12\right)=4\left(-x\right)c
Use the distributive property to multiply -3 by x+4.
9\left(5x-12\right)=4\left(-x\right)c
Combine 8x and -3x to get 5x.
45x-108=4\left(-x\right)c
Use the distributive property to multiply 9 by 5x-12.
45x-108-4\left(-x\right)c=0
Subtract 4\left(-x\right)c from both sides.
45x-108-4\left(-1\right)xc=0
Multiply -1 and 4 to get -4.
45x-108+4xc=0
Multiply -4 and -1 to get 4.
45x+4xc=108
Add 108 to both sides. Anything plus zero gives itself.
\left(45+4c\right)x=108
Combine all terms containing x.
\left(4c+45\right)x=108
The equation is in standard form.
\frac{\left(4c+45\right)x}{4c+45}=\frac{108}{4c+45}
Divide both sides by 45+4c.
x=\frac{108}{4c+45}
Dividing by 45+4c undoes the multiplication by 45+4c.