👤

afla suma numerelor :c+c=12,15+c=30,b-13=17,30-c=19

Răspuns :

c+c=12
2c=12
c=6
15+c=30
c=15
b-13=17
b=30
30-c=19
c=11
6+15+30+11=62
C=12:2 C=6 C=30-15 C=15 B=17+13 B=30 C=30-19 C=11 6+15+30+11=21+30+11=62