Răspunsuri

2014-08-27T15:57:13+03:00
A+b=65
a=2b+5

2b+5+b=65
3b=65-5
3b=60
b=60:3
b=20

a=2x20+5
a=40+5
a=45
2014-08-28T00:02:29+03:00
L_____l primul nr
l_____l_____l5
2x+x+5=65
3x+5=65
3x=60
x=20/primul nr)
20x2+5=45/al doilea nr