Răspuns :
(8/9+5/9×7/8):4/9-1/4=
=(8/9+35/72):4/9-1/4=
=(64/72+35/72):4/9-1/4=
=99/72:4/9-1/4=
=11/8:4/9-1/4=
=11/8×9/4-1/4=
=99/32-1/4=
=99/32-8/32=91/32
Răspuns:91/32
Explicație pas cu pas:
(8/9+5/9•7/8):4/9-1/4=
=(8/9+35/72):4/9-1/4
Aplificam 8/9 cu 8.
=(64/72+35/72):4/9-1/4
=99/72:4/9-1/4
=99/72•9/4-1/4
Simplificam pe diagonala pe 72 si 9 cu 9.
=99/8•1/4-1/4
=99/32-1/4
Amplificam 1/4 cu 8.
=99/32-8/32
=91/32