(3/8-x)-1/5=1/20 решите уравнение плз
3/8-х=1/5+1/20 (1/5+1/20=5/20=1/4) 3/8-х=1/4 х=3/8-1/4 (3/8-1/4=3/8-2/8=1/8) х=1/8