Question

a×b=40. b×c=20. a+c=12. a,b,c=? mă puteți ajuta vă rog ​

Answer 1

a×b+b×c+a+c=40+20+12=>a×b+b×c+a+c=72=>b×(a+c)+a+c=72=>b×12+12=72=>12b=60=>=>b=60:12=5=>

=>5a=40=>a=40:5=8

=>5b=5c=20=>c=20:5=4

a=8,b=5,c=4