А)1\16+3\8*2 2\3 б)7\10:(11\15+1\5) в)20:4\5-7\23

Question

А)1\16+3\8*2 2\3
б)7\10:(11\15+1\5)
в)20:4\5-7\23

Answer 1

1 /16+ 3/8 *2 2/3 = 1/16 +3/8*8/3 = 1/16+(3*8) /(8*3)= 1/16

7/10 / (11/15+1/5 ) = 7/10 ( 11+3)/ 15 = 7/10    /   14/15= (7*15) / ( 10*14) = 3/4

20 / 4/5 -7,23 = (20*5) / 4 -7/23 = 25-7/23 = ( 25*23 - 7 ) / 23 = (575-7) /23 =
568/23 = 24,69