7. ( ) При яких значеннях xiz вектори (3; 2; 4)i b(x;-5;z)

колінеарні?​

вычтите дробь из натурального числа

1-1/4=3/4,

2-3/7=1 4/7,

4-5/12=3 7/12,

6-7/15=5 8/15,

8-3/7=7 4/7,

10-1/10=9 9/10,

12-3/5=11 2/5,

16-5/7=15 2/7

найди разность

5/9-13/27=15/27-13/27=2/27,

3/8-5/24=9/24-5/24=4/24=1/6,

2/5-3/8=16/40-15/40=1/40,

5/12-13/72=30/72-13/72=17/72,

3/5-1/7=21/35-5/35=16/35,

7/15-2/9=21/45-10/45=11/45,

11/12-19/60=55/60-19/60=36/60=6/10=3/5,

9/17-27/68=36/68-27/68=9/68,

2/3-5/16=32/48-15/48=17/48,

9/10-4/15=27/30-8/30=19/30,

4/15-11/60=16/60-11/60=5/60=1/12,

5/8-1/3=15/24-8/24=7/24

выполнить вычитание

3/4-1/4=2/4=1/2,

5/8-3/8=2/8=1/4,

7/12-5/12=2/12=1/6,

8/15-2/15=6/15,

3/10-1/10=2/10=1/5,

17/25-12/25=5/25=1/5,

11/30-7/30=4/30=2/15,

28/45-13/45=15/45=1/3

7 3/4-(4 5/6- 3 1/2)+ 1 2/3 = 8 1/12
1) 4 5/6 - 3 1/2 = 4 5/6 - 3 3/6 = 1 2/6 = 1 1/3
2) 7 3/4 - 1 1/3 = 7 9/12 - 1 4/12 = 6 5/12
3) 6 5/12 + 1 2/3 = 6 5/12 + 1 8/12 = 7 13/12 = 8 1/12
9 2/5-(8 1/3 - 7  1/4 + 5 1/6) = 3,15
1) 8 1/3 - 7 1/4 = 8 4/12 - 7 3/12 = 1 1/12
2) 1 1/12 + 5 1/6 = 1 1/12 + 5 2/12 = 6 3/12 = 6 1/4
3) 9 2/5 - 6 1/4 = 9 8/20 - 6 5/12 = 3 3/20 = 3,15
(6 5/8- 1/2)- (5 3/4- 2 1/6) + (9 5/8 - 7 1/3) = 4 17/24
1) 6 5/8 - 1/2 = 6 5/8 - 4/8 = 6 1/8
2) 5 3/4 - 2 1/6 = 5 9/12 - 2 2/12 = 3 7/12
3) 9 5/8 - 7 1/3 = 9 15/24 - 7 8/24 = 2 7/24
4) 6 1/8-3 7/12 = 6 3/24 - 3 17/24 = 5 27/24 - 3 17/24 = 2 10/24
5) 2 10/24 + 2  7 /24 = 4 17/24
(5 1/30 - 2 3/5 - 2/15 + 6 ) - (7 - 6 11/12 + 1/4) = 7 29/30
1) 5 1/30 - 2 3/5 = 5 1/30 - 2 18/30 = 4 31/30 - 2 18/30 = 2 13/30
2) 2 13/30 -2/15 = 2 13/30 - 4/30 = 2 9/30 = 2 3/10
3) 2 3/10 + 6 = 8 3/10
4) 7 - 6 11/12 = 6 12/12 - 6 11/12 = 1/12
5) 1/12+ 1/4 = 1/12 + 3/12 = 4/12 = 1/3
6) 8 3/10 - 1/3 = 8 9/30 - 10/30 = 7 39/30 - 10/30 = 7 29/30