Question

- (-2017+2789) + ( 1789 - 2017 ) 

Tính nhanh ( giúp mik vs mik đg cần gấp)

Answer 1

= 1000 nha

xin

ok

Ht

Answer 2

-2017 + 2789 - 2017 + 1789

= -2017+ 2017+ 2789 -1789

=        0           +         100

=                  100

Answer 3

\(-\left(-2017+2789\right)+\left(1789-2017\right).\)

\(=\left(2789-1789\right)+\left(-2017+2017\right)\)

\(=1000+0\)

\(=1000\)

Answer 4

-2017-2789+1789-2017
=(-2017-2017)-2789+1789
=              0     -2789+1789
=         -400
HOK TỐT