Question

A- 10-(0,4+0,444...)=
B- 3/23-1/2=

Answer 1

$a) 10-(\frac{4}{10}+\frac{4}{9})= \\ \\ 10-\frac{4}{10}-\frac{4}{9}= \\ \\ \frac{900-36-40}{90}=\frac{824}{90}=\frac{412}{45} \\ \\ b) \frac{3}{23}-\frac{1}{2}=\frac{6-23}{46}=-\frac{17}{46}$