Răspuns :
1.
16+3 = 19 baloane are violeta
19-4 = 15 cate baloane avea violeta la inceput
2.
nr=?
nr + 10 + 20 = 64
nr +30 = 64
nr = 64-30
nr= 34
16+3 = 19 baloane are violeta
19-4 = 15 cate baloane avea violeta la inceput
2.
nr=?
nr + 10 + 20 = 64
nr +30 = 64
nr = 64-30
nr= 34
2. A+10+20=64
A+30=64
A=64-30
A=34
Proba : 34+10+20=64
1. 16+ 3=19
19- 4=15
A+30=64
A=64-30
A=34
Proba : 34+10+20=64
1. 16+ 3=19
19- 4=15