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Aflați factorul comun 2018 × 2017 + 2 × 2018 -2019 ×2016​

Răspuns :

2018×2017+2×2018-2019×2016=

=2018×(2017+2)-2019×2016=

=2018×2019-2019×2016=

=2019×(2018-2016)=

=2019×2=4038