tim x
\(\left(x-1\right)+\left(x-2\right)+\left(x-3\right)=2007\)
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\(\Leftrightarrow x-1+x-2+x-3=2007\)
\(\Leftrightarrow3x-6=2007\)
\(\Leftrightarrow3x=2013\)
\(\Leftrightarrow x=671\)
tim x
\(\left(x-1\right)+\left(x-2\right)+\left(x-3\right)=2007\)
\(\Leftrightarrow x-1+x-2+x-3=2007\)
\(\Leftrightarrow3x-6=2007\)
\(\Leftrightarrow3x=2013\)
\(\Leftrightarrow x=671\)