Răspuns :
Răspuns:x=8,y=12
Explicație pas cu pas:
x,y d.p 2,3⇒x/2=y/3=K
x/2=k⇒x=2k
y/3=k⇒y=3k
x+y=20
2k+3k=20
5k=20
k=4
x=2k⇒x=2·4=8
y=3k⇒y=3·4=12
x+y=20
x/2=y/3=k
x=2k
y=3k
2k+3k=20
5k=20
k=20:5
k=4
a=2×4
a=8
b=3×4
b=12
Răspuns:x=8,y=12
Explicație pas cu pas:
x,y d.p 2,3⇒x/2=y/3=K
x/2=k⇒x=2k
y/3=k⇒y=3k
x+y=20
2k+3k=20
5k=20
k=4
x=2k⇒x=2·4=8
y=3k⇒y=3·4=12
x+y=20
x/2=y/3=k
x=2k
y=3k
2k+3k=20
5k=20
k=20:5
k=4
a=2×4
a=8
b=3×4
b=12