Question

21x7+34x5-14x9

tick nhanh dễ

Answer 1

21 x 7 + 34 x 5 - 14 x 9 = 147 + 170 - 126 = 191

Answer 2

Bằng 191 đó bạn

Answer 3

443 nhé

Answer 4

147+170-126=191

Answer 5

21 x 7 + 34 x 5 - 14 x 9

= 3 x 7 x 7 + 34 x 5 - 14 x 3 x 3

= 3 x 49 + 34 x 5 - 42 x 3

= 3 x ( 49 - 42 ) + 34 x 5

= 3 x 7 + 34 x 5

= 21 + 170

= 191

Answer 6

21x 7 + 34 x 5 - 14 x 9

= 147 + 170 - 126

= 317 - 126

= 191

Answer 7

191=21x7+34x5-14x9