(8-1/3)*2-(6-1 5/9):2

Question

(8-1/3)*2-(6-1 5/9):2

Answer 1

(8-1/3)*2-(6-1 5/9):2=
=(23/3)*2-(6- 14/9):2=
=46/3-(3-7/9)=
=46/3-20/9=(46*3-20)/9=
=(138-20)/9=118/9= 13 1/9

Comments

спасибо