3x+1+2x=45

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Solution for 3x+1+2x=45 equation: 



3x+1+2x=45

We move all terms to the left:

3x+1+2x-(45)=0

We add all the numbers together, and all the variables

5x-44=0

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

5x=44

x=44/5

x=8+4/5

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