1-(15+12) = ?

2 câu trả lời

#Aka#

 1 - (15+12)

= 1 - (210+510)

= 1 - 710

=1010 - 710

= 310

1-(1/5+1/2)

=1-(2/10-5/10)

=1-(-3/10)

=1+3/10

=10/10+3/10

=13/10