5а:4-0,125-(0,6-4а:5)=1 1/3-2 1/3а-(1 5/6а-0,25)
1 1/4а-0,125-0,6+4/5а=1 1/3-2 1/3а-1 5/6а+0,25
1 1/4а+4/5а+2 1/3а+1 5/6а=1 1/3+0,25+0,125+0,6
6 13/60а=2 37/120
а=2 37/120:6 13/60
а=277/746
(5a-0.5)/4-(3+4a)/5=(4-7a)/3-(11a-1.5)/6
1.25a-0.125-(0.6+0.8a)-(4-7a)/3+(11a-1.5)/6=0
0.45a-0.725-(4-7a)/3+(11a-1.5)/6=0
0.45a-247/120+7/3a+(11a-1.5)/6=0
277/60a-277/120=0
a=(277/120)/(277/60)
a=0.5
