Answer:
(a) We have, \[(-7)+(-9)+4+16=-(7+9)+4+16\] \[[\because 20=16+4]\] \[=-16+20=-16+16+4\] \[=0+4=4\] \[[\because -16+16=0]\] (b) We have, \[(37)+(-2)+(-65)+(-8)=37-(2+65+8)\] \[=37-75=37-37-38\] \[[\because 75=37+38\Rightarrow -75-37-38]\] \[=0-38=-38\] \[[\because -37+37=0]\]
You need to login to perform this action.
You will be redirected in
3 sec