Question

tính 

-3/17 + ( 2/3 + 3/17 ) 

Answer 1

BẠN ƠI BẰNG 2 PHẦN 3 NHA

Answer 2

\(\frac{-3}{7}+\left(\frac{2}{3}+\frac{3}{17}\right)=\frac{-3}{17}+\frac{2}{3}+\frac{3}{17}\)

\(=\left(\frac{-3}{17}+\frac{3}{17}\right)+\frac{2}{3}\)

\(=0+\frac{2}{3}=\frac{2}{3}\)

Answer 3

-3/17 + (2/3+3/17)

= -3/17+2/3+3/17

=(-3/17 + 3/17)+2/3

= 0 + 2/3

= 2/3