(-10 $\frac{1}{5}$ – 5 $\frac{3}{4}$ ) – ( $\frac{1}{4}$ – 0,2)

$$\eqalign{
& \left( { – 10{1 \over 5} – 5{3 \over 4}} \right) – \left( {{1 \over 4} – 0,2} \right) \cr
& = \left( { – 15{{19} \over {20}}} \right) – \left( {{1 \over 4} – {1 \over 5}} \right) \cr
& = – {{15.20 + 19} \over {20}} – {1 \over {20}} \cr
& = {{ – 319} \over {20}} – {1 \over {20}} = – {{320} \over {20}} = – 16 \cr} $$