ROZWIAZ UKLADY ROWNAN DOWOLNA METODA mam inne przyklady tylko tego nie mam pomocy;( 5x-y=7 2(x+1)=2y
5x-y=7
2(x+1)=2y
x+1=y
5x-(x+1)=7
y=x+1
4x=7+1
4x=8
x=2
y=2+1
y=3
5x+y=7
2x+2=2y
5x+2x+2=7
7x=5/7
x=5/7
2*5/7+2=2y
10/7+2=2y
24/7=2y/:2
y=12/7
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5x-y=7
2(x+1)=2y
5x-y=7
x+1=y
5x-(x+1)=7
y=x+1
4x=7+1
y=x+1
4x=8
y=x+1
x=2
y=2+1
x=2
y=3
5x+y=7
2(x+1)=2y
5x+y=7
2x+2=2y
5x+2x+2=7
2x+2=2y
7x=5/7
2x+2=2y
x=5/7
2*5/7+2=2y
x=5/7
10/7+2=2y
x=5/7
24/7=2y/:2
x=5/7
y=12/7