Rezolevati in Z ecuatiile: 25+5x=0

Răspuns :

5x=0-25
5x= -25
x= -25:5
x= -5

25+5x=0

5x=0-25

5x= -25

x= -25:5

x= -5

Verificare: 25+5*(-5)= 25-25=0