Question

$1.3(8)x2 \frac{2}{5}$

Answer 1

1,3(8) x 2 2/5
1 38-3/90 x 12/5
1 35/90 x 12/5
1 7/18 x 12/5
25/18 x 12/5 (simplificăm) = 5/3 x 2/1 = =10/3

Answer 2

1,3(8) x 2intreg 2/5=
1,3(8)= 1intreg (38-3)/90=1intreg 35/90= (1x90+35)/90=125/90 simplific cu 5=25/18
2intreg 2/5= (2x5+2)/5=12/5
25/18 x 12/5=10/3