Question

Calcullati:
(1 supra 6 plus 10 supra 11 + 2020 supra 2011) + (5 supra 6 + 1 supra 11 - 2020 supra 2011)=

(7/3+3/5+10/7)-(4/3+3/5+9/7​

Answer 1

Răspuns:

(1/6+10/11+2020/2011)+(5/6+1/11-2020/2011)=

=1/6+10/11+2020/2011 +5/6+1/11-2020/2011=6/6+11/11=1+1=2

(7/3+3/5+10/7)-(4/3+3/5+9/7)=7/3+3/5+10/7-4/3-3/5-9/7=3/3+1/7=21/21+3/21=24/21=8/7