Răspunsuri

2014-06-14T09:18:08+03:00
A+b=105

2a=3b
a=3b/2

3b/2 + b=105        aducem la acelasi numitor

3b+2b=210
5b=210
b=45

a=105-45=60
2014-06-14T09:32:31+03:00
Notam al doilea  numar cu "x"
notam al doilea numar cu 3x·2=6x
x+6x=105
7x=105
x=105:7
x=15(al doilea  nr)
15x6=90(primul nr)