Wyznacz dwie liczby których suma wynosi 9 a różnica wynosi 1.
Prosze o Pomoc . Daje Naj ;)
x+y=9
x-y=1
x=9-y
9-y-y=1
-2y=1-9
-2y=-8/:(-2)
y=4
x=9-4
x=5
te liczby to 5 i 4
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x+y=9
x-y=1
x=9-y
9-y-y=1
x=9-y
-2y=1-9
x=9-y
-2y=-8/:(-2)
x=9-y
y=4
x=9-4
y=4
x=5
y=4
te liczby to 5 i 4