Question

tính nhanh: 

(72,69 + 18,47) - (8,47 + 22,69) =

Answer 1

=72,69+18,47-8,47-22,69

=50+10

=60

Answer 2

= 72,69+18,47-8,47-22,69

=(72,69-22,69)+(18,47-8,47)

=50+10

=60

Answer 3

=72,69+18,47-8,47-22,69

=50+10

=60

Answer 4

60