Question

Ajutați-mă va rog frumos​

Answer 1

a) 2/7+5/7=

=7/7=1

b) 3/11+6/11+2/11=

=9/11+2/11=

=11/11=1

c) 1/2+1/3+1/6=

=3/6+2/6+1/6=

=5/6+1/6=

=6/6=1

d) 8/13-9/13+1/3=

= -1/13+1/13=0

e) 5/6-1/4-5/12=

=10/12-3/12-5/12=

=7/12-5/12=

=2/12=1/6

f) 1/12+5/6-3/4=

=1/12+10/12-9/12=

=11/12-9/12=

=2/12=1/6