Odpowiedź :
Odpowiedź:
1.
(3 1/2 + 2 2/3)/(3 1/2 - 2 2/3) + 2 1/2 =
= (3 3/6 + 2 4/6)/(3 3/6 - 2 4/6) + 2 1/2 = (5 7/6)/(2 9/6 - 2 4/6) + 2 1/2 =
= 5 7/6 : 5/6 + 2 1/2 = 37/6 * 6/5 + 2 1/2 = 37/5 + 2 1/2 =
= 7 2/5 + 2 1/2 = 7 4/10 + 2 5/10 = 9 9/10 = 9,9
2.
7,11 : 4,5 = 711/100 : 45/10 = 711/100 * 10/45 = 711/10 * 1/45 = 711/450 =
= 1 261/450 = 1 87/150 = 1 29/30
3.
(13,16 - 2,17) - (5,01 - 3,11) = 10,99 - 1,9 = 9,09
4.
16 2/3 : 11 9/11 = 50/3 : 130/11 = 50/3 * 11/130 = 5/3 * 11/13 = 55/39 =
= 1 16/39
Odpowiedź:
3 i 1/2 + 2 i 2/3 /3 8i 1/2 - 2 i 2/3 + 2 i 1/2=
= 3 i 3/6 + 2 i 4/6 / 3 i 3/6 - 2 i 4/6 + 2 i 1/2=
= 5 i 7/6 /2 i 9/6- 2 i 4/6 +2 i 1/2 = 6 i 1/6 /5/6 + 2 i 3/6 +2 i 1/2=
=6 i 1/6 / 2 i 8/6 +2 i 1/2= ( 6 i 1/6 : 3 i 2/6 )+2 i 1/2= (37/6 : 20/6)+2 i 1/2=
= 37/6*6/20 +2 i 1/2( skracamy 6 i 6 przez 6)=37/20+2 i 10/20=
= 1 i 17/20+ 2 i 10/20= 3 i 27/20= 4 i 7/20
7, 11 : 4,5= 71,1:45 =1,58
( 13 ,16 - 2, 17) -( 5,01 - 3,11)= 10,99 - 1,9= 9,09
16 i 2/3 : 11 i 9/11= 50/3: 130/11= 50/3* 11/130( skracamy 50 i 130 przez 5)=
= 5/3*11/26= 55/78
Szczegółowe wyjaśnienie:
__1,58___________
7,11: 4,5= 7 1 , 1 : 45
- 4 5
___________
2 6 1
- 2 2 5
___________
3 6 0
- 3 6 0
______________
= = =
1 3 , 1 6
- 2, 1 7
____________
1 0 , 9 9
5 , 0 1
- 3 , 1 1
___________
1 , 9
1 0 , 9 9
- 1, 9
______________
9,0 9