1.(486+351)+514=
2786+871+129=
147+256+353+244=
(3681+11388)+(4319+1612)=
2.Найдите значения выражения (K-4283) : m ,если m=52,а k=30751.
3.37*218+63-218=
568*43-566*45=
417*187+417*213=
52*187-43-52*44=

4.Раскройте скобки
3(а+8)=
8(6-у)=
(х-9)*11-
12(5а-6)=
Помогите пожалуйста.
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