4x/7*3/4=7x/5-24/253x/7=7x/5-24/2525*3x/7=5*7x-2475x/7=35x-2435x-75/7=24245x-75x=168170x=168x=84/85
4/7*3/4=7x/5-24/253/7=35x/25-24/2575/7=35x-2435x=243/7x=243/245
x=84/85