Question

va rog ajutatima,urgeeeeeeeeeeeeeent ☺☺

Answer 1

x/y=4/9<=>x/4=Y/9=K =>x=4k si y=9k<br />3x+2y/5x+Y= 3•4k+2•9k/5•4k+9k= 12k+18k/20k+9k= 30k/29k= 30/29<br /><br />x/Y=3/5<=>x/3=Y/5=K =>x=3k si y=5k<br />4x+6y/x+Y= 4•3k+6•5k/3k+5k= 12k+30k/8k= 42k/8k= 42/8= 21/4<br /><br />x/4=Y/7=K =>x=4k si y=7k<br />9x+2y/x+3y= 9•4k+2•7k/4k+3•7k= 36k+14k/4k+21k= 50k/25k= 50/25= 2/1= 2<br />Dacă nu ai înțeles ceva, mă poți întreba ;)<br />Bafta! :D<br />