21/30+3/30-8/30= 61/200-(35/200-19/200)=
21/65-16/65+13/65=
21/30-(1/30+9/30)=
17/19-(5/19+2/19)=
3/10+5/10-7/10=

Question

Математика: 21/30+3/30-8/30= 61/200-(35/200-19/200)=21/65-16/65+13/65=21/30-(1/30+9/30)=17/19-(5/19+2/19)=3/10+5/10-7/10=​

Inna050798 · Answer

1) 16/302) 45/2003) 18/654) 11/305) 10/196) 1/10...

21/30+3/30-8/30= 61/200-(35/200-19/200)=21/65-16/65+13/65=21/30-(1/30+9/30)=17/19-(5/19+2/19)=3/10+5/10-7/10=​