Question

3/5 разделить (9/10-3/5*8/9)

Answer 1

9/10-3*8/5*9=9/10-24/45=9/10-8/15=27/30-16/30=11/30; 3/5:11/30=3/5*30/11=3*30/5*11=3*6/11=18/11=1ц7/11))))