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a - dziesiątki
b - jedności
10a+b+3b=44
10b+a-5a=52
10a+4b=44 /*4
10b-4a=52 /*10
40+16b=176
-40a+100b=520
116b=696
b=6
10a+4*6=44
10a+24=44
10a=20
a=2
a=2
b=6
Ta liczba to 26