21,4-5 1/2-(16 2/3-6.6) решите пж

Question

21,4-5 1/2-(16 2/3-6.6) решите пж

Answer 1

21,4-5 1/2-(16 2/3-6.6)=
1) 16 2/3-6,6=16 2/3-6 3/5=10 10/15-9/15=10 1/15
2) 21,4-5 1/2=21,4-5,5=15,9
3) 15,9-10 1/15= 15 9/10-10 1/15=5 27/30-2/30=5 25/30=5 5/6