Question

40 + ( 139 - 172 + 99 ) - (139 +199 -127 )

Answer 1

\(=40+139-172+99-139-199+127\)

\(=(139-139)+(99-199)+(127-172+40)\)

\(=0-100+(-45+40)\)

\(=-100-5\)

\(=-105\)

Answer 2

\(40+\left(139-172+99\right)-\left(139+199-127\right)\\ =40+66-211\\ =106-211=-105\)

Answer 3

40 + ( 139 - 172 + 99 ) - (139 +199 -127 )
=40+66-211
=106-211
=-105

 

Answer 4

$=40+139-172+99-139-199+127$

$=(139-139)+(99-199)+(127-172+40)$

$=0-100+(-45+40)$

$=-100-5$

$=-105$