Вправи 301 - 400 » 347-348

347. Розкрийте дужки: 1) 6 ∙ (2/3a + 5/12b) = 4a + 5/2b; 2) 1/3 ∙ (9/11m – 6/7n) = 3/11m – 2/7n; 3) 12 ∙ (3/4x + 13/18y – 1/24z) = 9x + 26/3y – 1/2z; 4) 11/7 ∙ (7p + 21/24q – 13/4) = 8/7 ∙ (7p + 21/24q – 7/4) = 8p + q – 2. 348. Розкрийте дужки: 1) 1/6 ∙ (12/17b – 18/23c) = 2/17b – 3/23c; 2) 8 ∙ (1/4p – 5/24q + 7/12t) = 2p – 5/3q + 14/3t.