Explicație pas cu pas:
x/y=z/t=u/v=2/3=k
x,z,u=2k
y,t,v=3k
a)y+t+v=12
3k+3k+3k=12
9k=12
k=12/9=4/3
x,z,u=2×4/3=8/3
y,t,v=3×4/3=4
b)y+t+v=15
9k=15
k=5/3
x,z,u=2×5/3=10/3
y,t,v=3×5/3=5
c)y+t+v=21
9k=21
k=7/3
x,z,u=2×7/3=14/3
y,t,v=3×7/3=7
Sper ca te-am ajutat!
