Răspuns :
2A+3B+C=?
2A+3B+C= ( A+B) x 2 + B+C
2A+3B+C=2xA+2xB+B+C
2A+3B+C=2A+3B+C
2A+3B+C=20x2+30
2A+3B+C=40+30
2A+3B+C=70
Sper că te-am ajutat!
2A+3B+C=?
2A+3B+C= ( A+B) x 2 + B+C
2A+3B+C=2xA+2xB+B+C
2A+3B+C=2A+3B+C
2A+3B+C=20x2+30
2A+3B+C=40+30
2A+3B+C=70
Sper că te-am ajutat!