3x-9=138

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Solution for 3x-9=138 equation: 



3x-9=138

We move all terms to the left:

3x-9-(138)=0

We add all the numbers together, and all the variables

3x-147=0

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

3x=147

x=147/3

x=49

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