1. -3x=4 12. -2/5x=6
2. 7i 1/2a=2
3.5i2/3a = -6
4. -1i 1/2a = -8
5. x+2= -8
6.x-3= -5
7. x+ 2i 1/2 = -8
8. 2+x= 3i 2/3
9. a- 1/2 =2i 1/2
10. 5x=15
11. -3x=4
12. -2/5x =6
13. 7i1/2a = 2
14 5i2/3a = -6
15. -1i1/2a = -8
16. 7c-8= -3
17. -2c+2=4
18 -7x+3= -4
19. 3x+1/3 = 9/3
20 -2/5x + 1/5 = 3/5
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1. -3x=4 /:(-3)
x=-4/3
x=-1 1/3
2. 7 1/2a=2 /:7 1/2
a=4/15
3. 5 2/3a=-6 /:5 2/3
a=-18/17
a=-1 1/17
4. -1 1/2a=-8 /:(-1 1/2)
a=16/3
a=5 1/3
5. x+2=-8
x=-8-2
x=-10
6. x-3=-5
x=-5+3
x=-2
7. x+2 1/2=-8
x=-8-2 1/2
x=-16/2-5/2
x=-21/2
x=-10,5
8. 2+x=3 2/3
x=3 2/3-2
x=11/3-2/1
x=11/3-6/3
x=-5/3
x=-1 2/3
9. a-1/2=2 1/2
a=2 1/2+1/2
a=6/2
a=3
10. 5x=15 /:5
x=3
11. -3x=4 /:(-3)
x=-4/3
x=-1 1/3
12. -2/5x=6 /:(-2/5)
x=15
13. 7 1/2a=2 /:7 1/2
a=4/15
14. 5 2/3a=-6 /:5 2/3
a=-18/17
a=-1 1/17
15. -1 1/2a=-8 /:(-1 1/2)
a=16/3
a=5 1/3
16. 7c-8=-3
7c=-3+8
7c=5 /:7
c=5/7
17. -2c+2=4
-2c=4-2
-2c=2 /:(-2)
c=-1
18. -7x+3=-4
-7x=-4-3
-7x=-7 /:(-7)
x=1
19. 3x+1/3=9/3
3x=9/3-1/3
3x=8/3 /:3
x=9/8
x=1 1/8
20. -2/5x+1/5=3/5
-2/5x=3/5-1/5
-2/5x=2/5 /:(-2/5)
x=-1