Question

[Nguyễn Minh Duyên]

Tính NHANH

-359 + 181 + (-123) + 350 + (-172)

Answer 1

[Trang]

ta có: -359 + 181 + ( -123 ) + 350 + ( -172 )

= ( -359 + 350 ) + ( 181 + -172 ) + ( -123 )

= -9 + 9 + ( -123 )

= 0 + ( -123 )

= -123