x3x+3=129

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Solution for x3x+3=129 equation: 



x3x+3=129

We move all terms to the left:

x3x+3-(129)=0

We add all the numbers together, and all the variables

x3x-126=0

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

x3x=126

x=126/1

x=126

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