1) X=5;

2) X= — 8;

3) X=4+ab;

4) X= Z+Y;

5) X= C+2a;

6) X=bc-3ab;

7) X=1;

8) X=a;

9) X=- b;

10) X = 3a — ab or X = a (3 — b);

11) X= c (2b -1);

12) X=a;

13) X=3—2k;

14) X=2ab;

15) X=2a;

16) X=a + c;

1) X=4;

2) X=3;

3) X=6;

4) X=6;

5) X=3;

6) X=3;

7) X=a/2;

8) X=6b;

9) X= (b-2a) /7;

10) X=1+a;

11) X=a;

12) X=2—4b;

13) X= 4b — 3a;

14) X=b +1;

15) X=1-b;

16) X=c — 2c/a;

1) X=a-4;

2) X=5/3;

3) X= (a — b) /2;

4) X=a;

5) X=2b;

6) X= b-c;

7) X= b + c

1) X= 2;

2) X= 1/2;

3) X= 1/ (a-b);

4) X=2;

5) X= 6/ (b-c);

6) X=c;

7) X=2a;

8) X=2;

9) X=-1;

1) X= -2;

2) X= -1;

3) X= -2;

4) X= -3;

5) X= — 8;

6) X= — 1;

7) X=2;

8) X=5/7;

1) X= — 2; Y=3;

2) X=2; Y=-1;

3) X=-3; Y=2;

4) X=3; Y=-1;

5) X=2; Y=1;

6) X=2; Y=1;

7) X=1; Y= — 0.5;

8) X=3; Y=0;

9) X=-1; Y=1;

10) X=1; Y=1;

1. X = -5 or X = 5

2. X = 0.5 or X = 4

3. X = -1/3 or X = 2

4. X = 0.25 or X = 3

5. X = 1/7 or X = 4

6. X = 3/5 or X = 5

7. X = -1 or X = 1/3

8. X = 1 or X = 3

9. X = 3/8 or X =-8/3

10. X = -0.25 or X = 4

11. X = 0.5 or X = 3

12. X = 4 or X = 0

13. X = 4.5 or X = 1

14. X = 1.5 or X = 3/7

15. X = 0.4 or X = 7

— X = 1/30

— X = 200

— X = 2 or X= -8

— X = 4 or X = — 2

— X = 1/300

— X = 2/3

— X = 5 or X = — 5

— X = 10

— X = 50

— X = 10