12+3x=9+x

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Solution for 12+3x=9+x equation:



12+3x=9+x
We move all terms to the left:
12+3x-(9+x)=0
We add all the numbers together, and all the variables
3x-(x+9)+12=0
We get rid of parentheses
3x-x-9+12=0
We add all the numbers together, and all the variables
2x+3=0
We move all terms containing x to the left, all other terms to the right
2x=-3
x=-3/2
x=-1+1/2

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