Question

daca x+y=20iar x+y sunt direct proportionale cu 2si3=>x= si y

Answer 1

 x y dp 2 3

x=2k
y=3k

2k+3k=20
5k=20
k=4

x=2*4=8
y=3*4=12

Answer 2

[x;y] d.p. [2;3]
x/2=y/3 de aici ne rezulta cu K »»
x=2K
y=3K
revenim la cerinţa :
x+y=20
2K+3K=20
5K=20
K=20/5
K=4
si rezultă»»»»»»»»»»>>>
x=2*4=8
y=3*4=12
deci x=8 si y=12

Sper ca te-am ajutat !!!