Răspunsuri

2014-03-09T19:06:46+02:00
A + b = 475
a/b = 2/3
3a = 2b
a = 475 - b
3(475 -b) = 2b
1425 - 3b = 2b
1425 = 5b
b = 1425 : 5
b = 285
a = 475 - 285
a = 190
verificare : 190 + 285 = 475 
2014-03-09T19:06:53+02:00
A+b= 475
a/b=2/3
b=3a/2
a+3a/2=475 |*2

2a+3a= 950
a=950/5
a=190
b=475-190
b=285