3x+x+5=12

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Solution for 3x+x+5=12 equation: 



3x+x+5=12

We move all terms to the left:

3x+x+5-(12)=0

We add all the numbers together, and all the variables

4x-7=0

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

4x=7

x=7/4

x=1+3/4

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