12x+4x=128

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Solution for 12x+4x=128 equation: 



12x+4x=128

We move all terms to the left:

12x+4x-(128)=0

We add all the numbers together, and all the variables

16x-128=0

We move all terms containing x to the left, all other terms to the right

16x=128

x=128/16

x=8

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