Question

Calculeaza (1/6+7/9)×18/17=....(5/6+7/8)×18/41+1/4=....(5/12-3/18)×4=....(11/45-1/30)×18/19=
(11/12-7/15)×10/9+1/2=​

Answer 1

Răspuns:

(1/6+7/9)×18/17=

=17/18×18/17=

=1

(5/6+7/8)×18/41+1/4=

=41/24×18/41+1/4=

=1/4×3+1/4=

=3/4+1/4=

=4/4=

=1

(5/12-3/18)×4=

=1/4×4=

=4/4=

=1

(11/45-1/30)×18/19=

=19/90×18/19=

=1/90×18=

=1/5

(11/12-7/15)×10/9+1/2=

=9/20×10/9+1/2=

=1/20×10+1/2=

=1/2+1/2=

=2/2=

=1

Sper că te-am ajutat!