Решите
4,1*15/8-7/8*4,1

[tex]4,1 * \frac{15}{8} - \frac{7}{8} * 4,1 = \frac{41}{10} * \frac{15}{8} - \frac{7}{8} *\frac{41}{10} = \frac{41}{2} * \frac{3}{8} - \frac{7}{8} * \frac{41}{10} = \frac{123}{16} - \frac{287}{80} =[/tex]
[tex] \frac{615}{80} - \frac{287}{80} = \frac{328}{80} = 4\frac{8}{80}=4,1[/tex]