Oblicz równanie:
x + 2y = 9
y - 1 = 3x
x+2y = 9y-1 =3x --> y=3x+1x+6x+2=97x+2=97x=7x=1y=3*1+1=4proszey=4 x=1
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x+2y = 9
y-1 =3x --> y=3x+1
x+6x+2=9
7x+2=9
7x=7
x=1
y=3*1+1=4
prosze
y=4 x=1