Question

Daca a/b=3/5 , atunci valoarea raportului 3a+b totul supra 3a+3b este egala cu ?

Answer 1

a/b=3/5→a/3=b/5=k→a=3k; b=5k
3a+b/3a+3b=
=3·3k+5k/3·3k+3·5k=
=9k+5k/9k+15k=
=14k/24k=
=14/24=
=7/12
Crăciun fericit! ;)

Answer 2

a/b=3/5 ⇒ a=3k si b=5k
3a+b / 3a+3b = 3*3k+5k/ 3*3k+3*5k = 9k+5k/9k+15k=
14k/24k = 14/24=7/12