1.Dane jest rowniaanie 2(x+3)=-X+3. Sprawdz czy spelnia je liczba -1
2.rozwiaz ukady rownan
2x+6=-x+3
3x=-3
x=-1
tak, liczba -1 spelnia rownanie
2.
x+y=5
x-2y=-1
x=5-y
5-y-2y=-1
-3y=-6
y=2
x=3
x-y=5
3x+3y=24
x=5+y
3(5+y)+3y=24
15+3y+3y=24
6y=9
y=3/2
x=6 i 1/2
y=1 i 1/2
x-2y=4
x+3=2y
x=4+2y
4+2y+3=2y
y=0
x=4
3x-1=y-2
4x-3=3(y-2)
y=3x-1+2
4x-3=3y-6
y=3x+1
4x-3=3(3x+1)-6
4x-3=9x+3-6
-5x=0
x=0
y=1
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1.Dane jest rowniaanie 2(x+3)=-X+3. Sprawdz czy spelnia je liczba -1
2x+6=-x+3
3x=-3
x=-1
tak, liczba -1 spelnia rownanie
2.
x+y=5
x-2y=-1
x=5-y
5-y-2y=-1
x=5-y
-3y=-6
x=5-y
y=2
x=3
y=2
x-y=5
3x+3y=24
x=5+y
3(5+y)+3y=24
x=5+y
15+3y+3y=24
x=5+y
6y=9
x=5+y
y=3/2
x=6 i 1/2
y=1 i 1/2
x-2y=4
x+3=2y
x=4+2y
4+2y+3=2y
x=4+2y
y=0
x=4
y=0
3x-1=y-2
4x-3=3(y-2)
y=3x-1+2
4x-3=3y-6
y=3x+1
4x-3=3(3x+1)-6
y=3x+1
4x-3=9x+3-6
y=3x+1
-5x=0
y=3x+1
x=0
y=1
x=0