Question

6 x 5 + 6 x 7

Answer 1

  6 x 5 + 6 x 7

= 30 + 42

= 72

Answer 2

6 x 5 + 6 x 7

= 6 x ( 5+7)

=6 x 12

= 72

Answer 3

6x5 + 6x7 = 30 + 42 = 72.

Answer 4

= 6 * ( 5 + 7)

= 6 * 12 

= 72

* là dấu nhân

Answer 5

6x5+6x7=30+42=72

Answer 6

6 *5+6*7=

(5+7)*6=72

Answer 7

30+42=72

Answer 8

6x5+6x7

=30+42

=72

vì nhân chia trước cộng trừ sau nên ta nhân trước

Answer 9

6 x 5 + 6 x 7

= 6 x ( 5 + 7 )

= 6 x 12

= 72

Answer 10

30+42=72

Answer 11

6 x 5 + 6 x 7

=30 +42

= 72

Answer 12

6x5+6x7=30+42=72                                                                                                                                                         

Answer 13

6x5+6x7

Cách 1:30+42=72

Cách 2: 6x(5+7)=6x12=72