Răspuns :
Termenii cu x ii treci in stanga si termenii fara x in dreapta schimband semnul
3x-2x=11-4
x=7
3x-2x=11-4
x=7
3•x+4=2•x+11
3x+4=2x+11\-2x
x+4=11
x=11-4
x=7
Verificare- 3×7+4=2×7+11⇒21+4=14+11⇒25=25
3x+4=2x+11\-2x
x+4=11
x=11-4
x=7
Verificare- 3×7+4=2×7+11⇒21+4=14+11⇒25=25