(4х1,125-4,5)х6,84+(3,54+1,324):0,76=
15,7+2 1/5-3 1/10=
5 4/18-(х-2 5/18)=1 11/18
0,72:(0,8-х)=1,5

(4*1,125-4,5)*6,84+(3,54+1,324):0,76=6,41)4*1,125=4,52)4,5-4,5=03)0*6,48=04)3,54+1,324=4,8645)4,864/0,76=6,46)0+6,4=6,415,7+2 1/5-3 1/10=157/10+11/5-31/10=157/10+22/10-31/10=148/10=14,85 4/18-(х-2 5/18)=1 11/18х-2 5/18=5 4/18-1 11/18х-2 5/18=4 22/18-1 11/18х-2 5/18=3 11/18х=3 11/18+2 5/18х=5 16/18х=5 8/9проверка 5 4/18-5 16/18+2 5/18=7 9/18-5 16/18=6 27/18-5 16/18=1 11/180,72:(0,8-х)=1,50,8-х=0,75/1,50,8-х=0,5х=0,8-0,5х=0,3проверка 0,72:(0,8-0,3)=0,72:0,5=1,5