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-3x-18+2\left(4x+8\right)-x-\left(3x-4\right)=2\left(x-\left(7x-1\right)\right)
Use the distributive property to multiply -3 by x+6.
-3x-18+8x+16-x-\left(3x-4\right)=2\left(x-\left(7x-1\right)\right)
Use the distributive property to multiply 2 by 4x+8.
5x-18+16-x-\left(3x-4\right)=2\left(x-\left(7x-1\right)\right)
Combine -3x and 8x to get 5x.
5x-2-x-\left(3x-4\right)=2\left(x-\left(7x-1\right)\right)
Add -18 and 16 to get -2.
4x-2-\left(3x-4\right)=2\left(x-\left(7x-1\right)\right)
Combine 5x and -x to get 4x.
4x-2-3x-\left(-4\right)=2\left(x-\left(7x-1\right)\right)
To find the opposite of 3x-4, find the opposite of each term.
4x-2-3x+4=2\left(x-\left(7x-1\right)\right)
The opposite of -4 is 4.
x-2+4=2\left(x-\left(7x-1\right)\right)
Combine 4x and -3x to get x.
x+2=2\left(x-\left(7x-1\right)\right)
Add -2 and 4 to get 2.
x+2=2\left(x-7x-\left(-1\right)\right)
To find the opposite of 7x-1, find the opposite of each term.
x+2=2\left(x-7x+1\right)
The opposite of -1 is 1.
x+2=2\left(-6x+1\right)
Combine x and -7x to get -6x.
x+2=-12x+2
Use the distributive property to multiply 2 by -6x+1.
x+2+12x=2
Add 12x to both sides.
13x+2=2
Combine x and 12x to get 13x.
13x=2-2
Subtract 2 from both sides.
13x=0
Subtract 2 from 2 to get 0.
x=0
Product of two numbers is equal to 0 if at least one of them is 0. Since 13 is not equal to 0, x must be equal to 0.