Question

x pe 5 = y pe 7 si x+y = 24 determinati x si y

Answer 1

x /5=y /7
7x=5y
x=5k
y=7k
x+y=24
5k+7k=24
12k=24
k=24:12
k=2
x=5*2
x=10
y=7*2
y=14

Answer 2

x/5=y/7=>x=5y/7
x+y=24
5y/7+y=24
5y+7y=168
12y=168
y=14
x=10

Sau
x/5=y/7=(x+y)/(5+7)=24/12=2
=>x/5=2=>x=10
=>y/7=2=>y=14