Question

"intr-o cutie subt doua bile albe doua bile galbene si doua bile rosii ele cantaresc in total 190 grame o bila galbena cantareste cu 17 grame pai putin decat una alba iar doua bile albe cantaresc cat 3 bile rosii afla cat cantareste o bila din fiecare culoare"

Answer 1

2a+2g+2r=190
2a=3r
g=a-17 => 2g=2a-34=3r-34

3r+(3r-34)+2r=190
8r=190+34=224
r=28 grame
a=28*3:2=24 grame
r=24-17=25 grame

Answer 2

2a+2g+2r=190
2a=3r
g=a-17=>2g-34=3r-34
3r+(3r-34)+2=190
3r=190+34
3r=224
r=28
a=28x3:2
a=24
r=24-17
r=7