Question

102 x 2 + 102 x 4 + 102 x 7 +102 x 8 

nhớ diễn giải ra mình sẽ tick cho 

^_^   >_<

Answer 1

102 x 2 + 102 x 4 + 102 x 7 +102 x 8 

= 120 x ( 2 x 4 x 7 x 8 ) 

= 120 x 448

= 53760

Answer 2

102x(2+4+7+8)=102x21=2142

Answer 3

102 x 2 + 102 x 4 + 102 x 7 + 102 x 8

= 102 x ( 2 + 4 + 7 + 8 ) 

= 102 x 21

= 2142 

Answer 4

102X(2+4+7+8)

      =2142

Answer 5

102x2+102x4+102x7+102x8

= 102x(2+4+7+8)

= 102x21

= 2142

Answer 6

=102x(2+4+7+8)

=102x21

=2142

tk cho mk nha bn

Answer 7

102 x 2 + 102 x 4 + 102 x 7 + 102 x 8

= 102 x ( 2 + 4 + 7 + 8 )

= 102 x 21

= 2142

Answer 8

đặt nhân tử chung là 102
=102x(2+4+7+8)
=102x21
=2142 

Answer 9

102 . 2 + 102 . 4 + 102 . 7 + 102 . 8

= 102 . ( 2 + 4 + 7 + 8 )

= 102 . 21

= 2142

Answer 10

102x2+102x4+102x7+102x8

=102x(2+4+7+8)

=102x21

=2142