Question

Tính nhanh:

(40,5 : 27- 405 : 270) x 1234567890 + 2007

Answer 1

 = (405 : 270 - 405 : 270) x 1234567890 + 2007

 = 0 x 1234567890 + 2007

 = 0 + 2007 = 2007

k mk nha

Answer 2

\(\left(40,5\div27-405\div270\right)\times1234567890+2007\)

\(=\text{ }\left[\left(40,5\times10\right)\div\left(27\times10\right)-405\div270\right]\times1234567890+2007\)

\(=\left(405\div270-405\div270\right)\times1234567890+2007\)

\(=0\times1234567890+2007\)

\(=0+2007\)

\(=2007\)