Rozwiąż układy równań
a)x+5y=8} b) x-y=3}
2x-y=5} 3(x-2)=2x=y}
1)x/3-x/2=2
2)(x-2)(x+3)=X2
3)2(c+1)=3a
4)2/c=a/4+b/4
5)1/a-3/2c=2/c
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a) x+5y=8 b) x-y=3
2x-y=5 3(x-2)=2x=y
x=8-5y x=3+y
2*(8-5y)-y=5 3x-6=2x=y
x=8-5y x=3+y
16-10y-y=5 3*(3+y)-6=2*(3+y)=y
x=8-5y x=3+y
-11y=-11/:(-11) 9+3y-6=6+2y=y
x= 8-5y x=3+y
y=1 -y=3=y/-
x=8-5*1 y=-3=y
y=1 x=3+(-3)
x=3 y=-3
y=1 x=20