=999 and 24/25×(-5)

=(999+24/25)×(-5)

=999×(-5)+24/25×(-5)

=( 1000- 1)×(-5)-24/5

= 1000×(-5)- 1×(-5)-24/5

= -5000+5-4 and 4/5

= -4999 4/5

Minus five times seven and three 1 plus seven times minus seven and three 1 minus 12 times seven and three 1.

=(-5)×7 1/3+7×(-7 1/3)- 12×7 1/3

=(-5)×7 1/3-7×7 1/3- 12×7 1/3.

=(-5-7- 12)×7 and 1/3.

= -24×22/3

= - 176