( 6 целых 3/8-2целых3/4 )*(-4)+7/18*9

Question

( 6 целых 3/8-2целых3/4 )*(-4)+7/18*9

Answer 1

6 3/8-2 3/4=5 11/8-2 6/8=3 5/4=
=4 1/4

4 1/4×(-4)=-17/4×4=-17

7/18×9=7/2=3 1/2

-17+3 1/2=-16 2/2+3 1/2=-13 1/2