Question

34.(10-15)+15.(34-10)

Answer 1

=190

Answer 2

 

=34. 15 -34.10 -15 . 34 +15.10

= 15.10 -34.10

=150-340

=-190 

Answer 3

34.(15 - 10) - 15.( 34 - 10)

= 34 . 15 - 34 . 10 - 15 . 34 - 15 . 10

= (34 .15 - 34 . 15) - 34 . 10 - 15 . 10

= 0 - 10.( 34 - 15)

= 0 - 10 . 19

= -190

Answer 4

=34.15+15.24=>=15+(34.24)=>=15+816=>=831 .Chúc bạn học tốt!