Question

Pomocy mam problem 1gimnazjum zadania utrwalające str27 zad 1 matematyka wokół nas1 dam naj jest w załaczniku zdjecie help me

Answer 1

A)
10,6 - 4 2/3 + 16 1/15 = 10 6/10 - 4 10/15 + 16 1/15 = 10 2/5 - 20 11/15 = 
= 10 6/15 - 20 11/15 = 10 6/15 - 19 26/15 = - 9 6/15 = - 9 3/5 = - 9,6
b)
6 1/2 + (3 1/3 - 1/2) : 2 5/6 - 1 3/4 = 6 1/2 + (3 2/6 - 3/6) : 2 5/6 - 1 3/4 = 
= 6 1/2 + (2 8/6 - 3/6) : 2 5/6 - 1 3/4 = 6 1/2 + 2 5/6 : 2 5/6 - 1 3/4 = 
= 6 1/2 + 1 - 1 3/4 = 7 1/2 - 1 3/4 = 7 2/4 - 1 3/4 = 6 6/4 - 1 3/4 = 5 3/4
c)
7,13/(2,75 - 1 3/5) = 7,13/(2,75 - 1,6) = 7,13/1,15 = 6,2
d)
6,5 + (3 1/3 - 0,5)/2 1/3 = 6,5 + (3 1/3 - 1/2)/2 1/3 = 6,5 + (3 2/6 - 3/6)/2 1/3 =
 = 6,5 + (2 8/6 - 3/6)/2 1/3 = (6,5 + 2 5/6)/2 1/3 = (6 5/10 + 2 5/6)/2 1/3 =
 = (6 15/30 + 2 25/30)/2 1/3 = 8 40/30 / 2 1/3 = 9 1/3 : 2 1/3 = 
= 28/3 * 3/7 = 4