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x*2+3x+1=0
We add all the numbers together, and all the variables
3x+x*2+1=0
Wy multiply elements
3x+2x+1=0
We add all the numbers together, and all the variables
5x+1=0
We move all terms containing x to the left, all other terms to the right
5x=-1
x=-1/5
x=-1/5
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