Question

na szybko.............​

Answer 1

Odpowiedź:

Szczegółowe wyjaśnienie:

a)

4/15 + 3/10 = 8/30 + 9/30 = 17/30

b)

15/8 + 53/10 = 75/40 + 212/40 = 287/40 = 7 i 7/40

c)

= 16/18 - 15/18 = 1/18

d)

= 21/4 - 13/7 = 147/28 - 52/28 = 95/28 = 3 i 9/28

e)

= 13/11 razy 5 =  65/11 = 5 i 10/11

f)

= 7/4 razy 8/7 =  56/28 = 2

g)

= 1/3 podzielić przez 7/1 = 1/3 razy 1/7 = 1/21

h)

= 12/7 podzielić przez 9/7 = 12/7 razy 7/9 = 84/63 = 1 i 21/63

i)

= 26/9 - 12/5 razy 10/9 = 29/9 - 120/45 = 29/9 - 24/9 = 5/9

j)

= ( 7/5 + 13/10) : 6/5 = (14/10 + 13/10) :6/5 = 27/10 : 6/5 = 27/10 razy 5/6 = 135/60 = 2 i 15/60 = 2 i 3/12 = 2 i 1/4