Question

PE Aplicare şi exersare 1 13.a) 21 7 -3- +6 55 10 2 2) 21 2 5 5 1 + 3 2 9 2 9) 27​

Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

Răspuns:

=(21·5+1)/5:[(7·5+1)/5-(3·10+1)/10+(6·2+1)/2]+2/3·(⁹⁾5/2-²⁾5/9):1/27=

=106/5:(²⁾36/5-31/10+⁵⁾13/2)+2/3·(45/18-10/18):1/27

=106/5:(72/10-31/10+65/10)+2/3·35/18·27/1

=106/5:106/10+1890/54

=106/5·10/106+35

=2+35

=37