Răspuns :
Răspuns:
a/b=4/10=2/5 ; (3a+2b)/(a+5b)=( 3*2+2*5)/(2+5*5)=16/27
Explicație pas cu pas:
Răspuns:
a/b=0,4=>a=0,4b=4b/10=2b/5
(3a+2b)/(a+5b)=(3·2b/5+⁵⁾2b)/(2b/5+⁵⁾5b)=(6b+10b)/27b=16b/27b=16/27
Răspuns:
a/b=4/10=2/5 ; (3a+2b)/(a+5b)=( 3*2+2*5)/(2+5*5)=16/27
Explicație pas cu pas:
Răspuns:
a/b=0,4=>a=0,4b=4b/10=2b/5
(3a+2b)/(a+5b)=(3·2b/5+⁵⁾2b)/(2b/5+⁵⁾5b)=(6b+10b)/27b=16b/27b=16/27