\(\overline{abc3}+4125=\overline{6abc}\\ \overline{abc}\times10+3+4125=6000+\overline{abc}\\ \overline{abc}\times10+4128=6000+\overline{abc}\\\overline{abc}\times10-\overline{abc}=6000-4128\\ \overline{abc}\times\left(10-1\right)=1872\\ \overline{abc}\times9=1872\\ \overline{abc}=1872:9\\ \overline{abc}=208\)
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