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½x=2101+181
½x=2282 |*2
x=4564
x - to niewiadoma
2x - 181 = 2101
2x = 2101 + 181
2x = 2282
x= 1141
Odp: Szukaną jest liczba 1141
2+x+181-x=2101
2x=2101-2-181
2x=1918
x=959
szukana liczba to 959