(4 11/36+5 4/9-7 1/4)*2= Плес:)

Question

(4 11/36+5 4/9-7 1/4)*2=
Плес:)

Answer 1

(4 11/36+5 4/9-7 1/4)*2=
=(4 11/36+5 16/36-7 9/36)*2=
=(9 27/36-7 9/36)*2=
=2 18/36*2=2 1/2*2=5/2*2/1=
=5