ГДЗ Алгебра 7 клас Бевз (2024)

Обчисліть a) –1/4 + (–3/4) – 2/9 + 4/9 = –1 + 2/9 = –7/9; б) (1/2 – 1/8) • (–2)3 – 31/4 : (–1/2)2 = (4-1)/8 • (–8/1) – 13/4 • 4/1 = 3/8 • (–8/1) – 13 = 3 – 13 = –10.