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-12x-8+2\left(6x+4\right)
Use the distributive property to multiply -4 by 3x+2.
-12x-8+12x+8
Use the distributive property to multiply 2 by 6x+4.
-8+8
Combine -12x and 12x to get 0.
0
Add -8 and 8 to get 0.
4\left(-\left(3x+2\right)+3x+2\right)
Factor out 4.
0
Simplify.
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