le 23 merci encore ;)

Le 23 Merci Encore class=

Sagot :

2/5+7/10

=(4+7)/10

=11/10

2/5×7/10

=(2×7)/(5×10)

=14/50

=(14÷2)/(50÷2)

=7/25

3/4×1/7

=(3×1)/(4×7)

=3/28

3×1/28

=(3×1)/28

=3/28