Question

tính 15-5+45+5*2

Answer 1

15 - 5 + 45 + 5 x 2 = 10 + 45 + 10= 55 + 10

Answer 2

15 - 5 + 45 + 5 x 2 = 10 + 45 + 5 x 2 = 55 + 10

= 65

Answer 3

15-5+45+ 5 x 2

=15-5+45+10

=10+45+10

=55+10

=65