Question

calculati 1,25-0,9(75):27 pe 11

Answer 1

1,25 - 0,9(75) : 27/11 =

= 125/100 - (975-9)/990 × 11/27 =

= 5/4 - 966/990 × 11/27 =

= 5/4 - 161/165 × 11/27 =

= 5/4 - 161/15×27 =

= 5/4 - 161/405 =

= (5×405 - 161×4)/1620 =

= (2025 - 644)/1620 =

= 1381/1620 =