вычислите 20-3 8/15+10 4/15;

20-3\dfrac 8{15}+10\dfrac 4{15}=19\dfrac{15}{15}-3\dfrac 8{15}+10\dfrac 4{15}=\\\\\\=16\dfrac7{15}+10\dfrac 4{15}=26\dfrac {11}{15}