3/4x+1/6x-3/20x=45/60x+10/60x-9/60x=64/60x=1 4/60x= 1 1/15x
Если x=60,то x=1 1/15×60=16/15×60=960/15=64
3/4x+1/6x-3/20x=45/60x+10/60x-9/60x=64/60x=1 4/60x= 1 1/15x
Если x=60,то x=1 1/15×60=16/15×60=960/15=64