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136/2=68
68+3=71
Jedna liczba to 68, a druga 71
x+3 - liczba druga
x+x+3 = 139
2x = 136
x = 68
68 - liczba pierwsza
68+3 = 71 - liczba druga
68+71 = 139
- 3
136
136:2=68
68+3=71
spr.:
71
+68
139