Question

Срочно нужно, помогите ​

Answer 1

а) (a + b) ∙ c = a ∙ c + b ∙ c;

б) x ∙ (y – z) = x ∙ y – x ∙ z;

в) a – (b + c) = (a – b) – c;

г) a – (b – c) = (a – b) + c.