Question

cat face [0,91(6)-0,2(7)-0,2(7)]: 23/12-0,6=?
/ este supra.

Answer 1

0,91(6)=(916-91)/900=825/900 0,2(7)=(27-2)/90=25/90 =>[825/900-2•25/90]:23/12-6/10=[825/900-50/90]:23/12-6/10=[825/900-500/900]:23/12-6/10=(825-500)/900:23/12-6/10=325:23/12-6/10= 325•12/23-6/10=3900/23-6/10=39000/230-138/230=(39000-138)/230=38862/230=19431/115