Odpowiedzi

2010-03-16T18:49:35+01:00
A) (1/3+2/7) : (1 - 1/9) + 3/7= (7/21 + 6/21):8/9 + 3/7 = 13/21 * 9/8 + 3/7 = 39/56 + 24/56 = 53/56


b)(2razy 5/6)² - (3² -1 1/3)= 100/36 - 7 2/3 = 2 3/4 - 7 2/3 = 2 9/12 - 7 8/12 = -5 1/12


c)1,6 × 7/16 - 2,7/3³ = 0,7 - 0,3 = 0,4
1 5 1