Suma 2 liczb wynosi 12 a ich roznica 7 .Znajdz te liczby !!! Zadanie z MATEMATYKI 2 układ rownan Daje Naj
x+y=12
x-y=7
___________
2x=19
x=9,5
9,5+y=12
y=12-9,5
y=2,5
x=12-y
12-y-y=7
-2y=7-12
-2y=-5/(-2)
x=12-2,5
te liczby to 9,5 i 2,5
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x+y=12
x-y=7
___________
2x=19
x=9,5
9,5+y=12
y=12-9,5
y=2,5
x=9,5
y=2,5
x+y=12
x-y=7
x=12-y
x-y=7
x=12-y
12-y-y=7
x=12-y
-2y=7-12
x=12-y
-2y=-5/(-2)
x=12-y
y=2,5
x=12-2,5
y=2,5
x=9,5
y=2,5
te liczby to 9,5 i 2,5