2. a) 1020 + a = 3050
a = 3050 - 1020 = 2030
b) b - 52 = 48
b = 48 + 52 = 100
c) 63 : c = 7
c = 63 : 7 = 9
d) d : 9 = 9
d = 9 x 9 = 81
e) 23 + X + 150 = 340
X = 340 - 23 - 150 = 167
f) y - 72 - 144 = 216
y = 216 + 72 + 144 = 432
3. a + b + c = 963
b = 963:3
b = 321
a = 320
c = 322
a + b + c = 963
320 + 321 + 322 = 963
4. 4x15 = 60 bomboane in total
60 : 5 = 12
Raspuns: La 12 copii poate da cate 12 bomboane.
