Question

plis potrzebuje na jutro daje 45.pkt
1) (5 1/4 - 2 1/2) : 1/3=
2) (12 1/3 - 1/2) * 12 : 1 1/3=
3) 4/9 + 2/5 * 25=
4) 4/5 - 3/5 : 3=
5) ( 1 - 5/7 ) : 2 2/49=
6) 1 3/8 - ( 9/10 - 3/4)=

Answer 1

Odpowiedź:

1) (5 1/4 - 2 1/2) : 1/3= ( 21/4 - 5/2) x 3 = 11/4 x 3 = 33/4 = 8 1/4

2) (12 1/3 - 1/2) * 12 : 1 1/3= ( 37/3 - 1/2) x 12 : 4/3 = 71/6 x 12 x 3/4 = 71 x 3/2 = 213/2 = 106 1/2

3) 4/9 + 2/5 * 25= 4/9 + 2 x 5 = 4/9 + 10 = 94/9 = 10 4/9

4) 4/5 - 3/5 : 3= 4/5 - 3/5 x 1/3 = 4/5 - 1/5 = 3/4

5) ( 1 - 5/7 ) : 2 2/49= 2/7 : 100/49 = 2/7 x 49/100 = 7/50

6) 1  3/8 - ( 9/10 - 3/4)= 11/8 - 3/20 = 49/40 = 1 9/40