Question

determinati numetele care indeplinesc simultan conditiile a3=b/4, b/5=c/6 si 3a-b-c=10​

Answer 1

a/3=b/4 ⇒a=3b/4

b/5=c/6 ⇒c=6b/5

inlocuind in ultima ecuatie

3a-b-c=10

3·3b/4-b-6b/5=10

9b/4 -b-6b/5=10

aducand la acelasi numitor

45b-20b-24b=200

b=200

a=3b/4=600/4= 150

c=6b/5=1200/5=240