-(-72+39)+39 = 72-39+39=72
+(398-700)+700=398-700+700=398
-(754-1200)-1200=-754+1200-1200=-754
-(-32-491)+32=32+491+32=555
-(-129-59)-129=129+59-129=59
-(-72+39)+39 = 72-39+39=72
+(398-700)+700=398-700+700=398
-(754-1200)-1200=-754+1200-1200=-754
-(-32-491)+32=32+491+32=555
-(-129-59)-129=129+59-129=59