Решите уравнение 1/2x+1/3x+1/4x=26/27....
13/12х=26/27 1/2+1/3=5/6 х=26/27:13/12 5/6+1/4=13/12 х=8/9 26/27:13/12=26/27*12/13=24/27=8/9