I3x+42=180

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Solution for I3x+42=180 equation: 



3I+42=180

We move all terms to the left:

3I+42-(180)=0

We add all the numbers together, and all the variables

3I-138=0

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

3I=138

I=138/3

I=46

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