Question

c+d-8,3 при с=-9 4/5; d=-1 9/20

Answer 1

- 9 4/5 + ( - 1 9/20 ) - 8,3 = - ( 9 16/20 + 1 9/20 + 8 6/20 ) = - 18 31/20 = - 19 11/20

Answer 2

- 9,8 - 1,45 - 8,3=19,55