Odpowiedź:
(2 - 1/7) * 3/2 + 0,6 - 8 * 3/7 = 1 6/7 * 3/2 + 0,6 - 24/7 =
= 13/7 * 3/2 + 6/10 - 24/7 = 39/14 + 6/10 - 3 3/7 = 2 11/14 + 6/10 - 3 3/7 =
= 2 55/70 + 42/70 - 3 30/70 = 2 97/70 - 3 30/70 = 3 27/70 - 3 30/70 =
= - 3/70
(1/3 + 2/7) : ( 1- 1/9 ) + 3/7 = (7/21 + 6/21) : 8/9 + 3/7 = 13/21 : 8/9 + 3/7 =
= 13/21 * 9/8 + 3/7 = 13/7 * 3/8 + 3/7 = 39/56 + 3/7 = 39/56 + 24/56 =
= 63/56 = 9/8 = 1 1/8
