Question

Thực hiện phép tính :

12:{390:[500-(125+35x7)]}

Answer 1

12:{390:[500-125+35x7]}

=12:{390:620}

=12:39/62

=248/13

Answer 2

cám ơn nhé !

Answer 3

\(12:\left\{390:\left[500-\left(125+35\cdot7\right)\right]\right\}\)

\(=12:\left\{390:\left[500+370\right]\right\}\)

\(=12:\left\{390:870\right\}\)

\(=12:\frac{13}{29}\)

\(=\frac{348}{13}\)

Answer 4

làm lại phần đầu làm sai nha

\(=12:\left\{390:\left[500-\left(125+35\cdot7\right)\right]\right\}\)

\(=12:\left\{390:\left[500-370\right]\right\}\)

\(=12:\left\{390:130\right\}\)

\(=12:3\)

\(=4\)

Answer 5

tính sai rồi kìa -_-