Răspuns :
Uite,aici ai ambele rezolvati,daca nu intelegi ma poti intreba
1) a+b=63
a=8b
8b+b=63
9b=63
b=7
a=8b=8×7=56
verificare: 7+56=63
2) b-numar biciclete
t- numar triciclete
b+t=48
t=2b
b+2b=48
3b=48
b=16
t=2b=2×16=32
verificare: 16+32=48
coroana?
a=8b
8b+b=63
9b=63
b=7
a=8b=8×7=56
verificare: 7+56=63
2) b-numar biciclete
t- numar triciclete
b+t=48
t=2b
b+2b=48
3b=48
b=16
t=2b=2×16=32
verificare: 16+32=48
coroana?