Question

daca se pun trei flori in fiecare vaza raman 5 flori.daca se pun 5 flori in fiecare vaza raman 3 vaze libere si o vaza cu o floare .cate flori si cate vaze sunt ???

Answer 1

$x\to nr. \ de \ vaze \\\\ 3x+5 \to nr. \ de \ flori \\\\ 5(x-4)+1\to nr.\ de \ flori \\\\\\ 3x+5=5(x-4)+1 \\\\ 3x+5=5x-20+1 \\\\ 3x-5x=-19-5\\\\ -2x=-24 \ \ \ |:(-2) \\\\\\ \boxed{x=12} \\\\\\ 3*12+5=\\\\=36+5=\\\\= \boxed{41 \ flori}$