Question

5/9 + 3/7=

5/7 * 21/25=

2/5-14/15=

8/10: 1/5=

2 2/3 + 4 4/5=
3 4/7 - 1 2/3=
5 5/8 * 3 11/15=
5 2/5 : 3/5=

Answer 1

Объяснение:

5/9+3/7=35/63+27/63=62/63

5/7×21/25=1/1×3/5=3/5

2/5-14/15=6/15-14/15= -8/15

8/10:1/5=4/5×5/1=4/1×1/1=4

2 2/3+4 4/5=(2+4)+(10/15+12/15)=

=6+22/15=6+1 7/15=7 7/15

3 4/7-1 2/3=(3-1)+(12/21-14/21)=

=2+(-2/21)=1 21/21-2/21=1 19/21

5 5/8×3 11/15=45/8×56/15=3/1×7/1=21

5 2/5:3/5=27/5×5/3=9/1×1/1=9