1. 3*x=33
3x=33/:3
x=11
Spr: 3*11=33
33=33
L=P
2. 5*x+22=62
5x+22=62
5x=40/:5
x=8
Spr: 5*8+22=62
40+22=62
62=62
L=P
3. 8*x-5-4x=15
8x-5-4x=15
4x=15+5
4x=20/:4
x=5
Spr: 8*5-5-4*5=15
40-5-20=15
15=15
L=P
4. 7*x-9-x=8-2*x-1
7x-9-x=8-2x-1
6x+2x=7+9
8x=16/:8
x=2
Spr: 7*2-9-2=8-2*2-1
14-11=8-4-1
3=3
L=P