Question

Resolva o sistema: {5a =3f
{3a+1 =2f

Answer 1

a= 3f/5
3.3f/5+1=2f
9f/5+1=2f
9f/5-2f+1=0
MMC=5
9f-2.5f+1.5=0
9f-10f+5=0
-f=-5
f=5

5a=3.5
5a= 15
a= 15/5=3