Răspuns :
0.2x-10=0
0.2x=0+10
0.2x=10
x=10:0.2
x=50
Verificare: 0.2*50-10=0
-10x+2=5
-10x=5-2
-10x=3
x=3:-10
x= -0.3
Verificare:-10*-0.3+2=5
0.2x=0+10
0.2x=10
x=10:0.2
x=50
Verificare: 0.2*50-10=0
-10x+2=5
-10x=5-2
-10x=3
x=3:-10
x= -0.3
Verificare:-10*-0.3+2=5