Question

daca x/y=2/5 sa se afle valoarea raportului 3x
+4y/y

Answer 1

5x=2y⇒x=2y/5;
⇒3x+4y/y
⇒3·2y/5+y/y
⇒6y/5+y/y
⇒6y/5+5y/5/y
⇒11y/5/y
⇒11y/5·1/y⇒se reduce y cu y;
⇒11/5=2,2;