exercitiile 1 4 5 6 va rog!!! urgent!! la 19 trebuie sa predau tema

Răspuns:
a) 63+90=153 180-153= 27 x=27 grade
b)90-78=12 grade x=12 grade
c)180-103=77grade x=77 grade y la fel 77 grade
d)180-100=80 80:2=40 x=40 grade