Question

Calculati: B) 5 supra 24 - 7 supra 16 + 27 supra 32 ori 4 supra 3-125 supra 96 :25 supra 16

C.- 9 supra 4 + 65 supra 36 ori 45 supra 26 - 7 supra 2 +35 supra 24 :10 supra 21

D. 55 supra 48 : 11 supra 54 +21 supra 40 ori 36 supra 14 - 21 supra 5 -121 supra 40

E.( 5 supra 21 - 3 supra 8 - 2 supra 3 +5 supra 6) ori ( 2 supra 3 - 7 supra 6 + 4 supra 10 - 4 supra 5

Answer 1

B)5/24 - 7/16 + 27/32 x 4/3-125/96 :25/16 =
= 5/24 - 7/16 + 9/8 x 1/1-125/96 x 16/25 =
= 5/24 - 7/16 + 9/8 -5/6 =
=5/24 - 7/16 + 9/8 -5/6 =
=(5x2-7x3+9x6-5x8)/48=
=(10-21+54-40)/48=
=3/48=1/16    

C.- 9/4 + 65/36 x 45/26 - 7/2 +35/24 :10/21 =
=- 9/4 + 5/4 x 5/2 - 7/2 +35/24 x21/10 =
=- 9/4 + 25/8 - 7/2 +7/8 x7/2 =
=- 9/4 + 25/8 - 7/2 +49/16 =
=(- 9x4 + 25x2 - 7x8 +49)/16 =
=(-36+50-56+49)/16=
=7/16 

D. 55/48 : 11/54 +21/40 x 36/14 - 21/5 -121/40 =
=55/48 x 54/11 +3/10 x 9/2 - 21/5 -121/40 =
=5/8 x 9/1 +3/10 x 9/2 - 21/5 -121/40 =
=45/8 +27/20 - 21/5 -121/40 =
=(45x5+27x2-21x8-121)/40=
=(225+54-168-121)40=
=-10/40=
=-1/4 

E.( 5/21 - 3/8 - 2/3 +5/6) x ( 2/3 - 7/6 + 4/10 - 4/5=
=( 5/21 - 3/8 - 2/3 +5/6) x ( 2/3 - 7/6 + 2/5 - 4/5=
=(5x8-3x21-2x56+5x28)/167  x ( 2x10- 7x5 + 2x6 - 4x6)/30=
=(40-63-112+140)/168  x ( 20- 35 + 12 - 24)/30=
=5/168  x (- 27)/30=
=5/168  x (- 9)/10=
=-9/336=
=-3/112