Предмет: Математика, автор: aminohka

Помогите с примерами...

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Автор ответа: КамиллаМаткаримова15

1) 2(3+а)-10=6+2а-10=-4+2а
2) -9(4+у)+36=-36-9у+36=0-9у
3) 20+15(х-2)=20+15х-30=-10+15х
ну и так далее

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