Răspuns :
a-b = 30,2
(a+256,43) - (b+173,25) = a+256,43 - b - 173,25
= a-b + 83,18
= 30,2+ 83,18
= 113,38
(a+256,43) - (b+173,25) = a+256,43 - b - 173,25
= a-b + 83,18
= 30,2+ 83,18
= 113,38