Question

Puteți să mă ajutați vă rog?​

Answer 1

(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

Answer 2

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