Question

Решите 0.2 2) 4) пж.

Answer 1

Объяснение:

2)

-1 1/7×(4/5+19/20)×(6 5/6+4 2/3)=

= - 8/7×((16+19)/20)×(41/6+14/3)=

= - 8/7×35/20×(41+28)/6=

= - 8/7×7/4×69/6= - 8/7×7/4×23/2=

= - 23

4)

9 1/6:(4 1/3-8)+24×3/8=

=55/6:(13/3-8)+24×3/8=

=55/6:(13-24)/3+9=

=55/6:(-11/3)+9= - 55/6×3/11+9=

= - 5/2+9= (-5+18)/2=13/2=6 1/2=6,5