1.1 1) 4
a+b +
a
b
= 4
3
2
3 +2
+ 3
2 7
3
= 3
8
3 +
3
1
3
= 28
3
3
8 2
3
3
1
= 7
2 2=
3
2
2) ab
5
3a b
4a b
= 2
3
5
3
5
3 2
3 5
3
4 2
3 5
3
= 10
9
5 2
5
3
8
3 5
3
= 10
9
5
1
3
1
= 10
9
1
5 1
3
1
1
= 2
9 1
3
= 1
9
3) 1
x 2y
3
13x
5
2;3
= 1
2 22;4
3
132
5
2;3
= 1
2 2 12
5
3
132
5
23
10
= 1
2 24
5
3
26
5 23
10
= 1
14
5
3
29
10
= 1+
14
15
1
3
29
10
= 29
15
29
10
= 29
15
10
29
= 2
3
4) 2x
y 2
3
y
x 2
= 2
2
3
( 4) 2
3
( 4)
2
3
2
= 4
3 16
3
4 3
2 2
= 20
3
6 2
= 20
3
4
= 20
3
1
4
= 5
3
5)
2x 4
3
2;6
0;3 2x
2
25
= 2
5
2
4
3
13
5
3
10 2
5
2
2
25
= 5 4
3
13
5
3
10 2
25
4
25
=
3 13
5
3
10 2
25
4
1
25
= 28
5
3
10 1
2
= 28
5
1
5
= 28
5
5
1
=28
6) 10 6
+ a
3
b
9a
b
5
=10 6
+ 5
3
3
3
2
9 5
3
3
2
5
=10 6
+ 125
27
3
2
15
3
2
5
=10 6
+ 125
27
2
3
15 2
3
5
=10 6
+ 250
81 10
5
=1 000 000+ 250
81
100 000=
72 900 250
81