August 2018 1 40 Report
Rozwiąż układy równań

a) x+2y=9
y-1 =3x
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b) x-y=2
½x-1=¼y
⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻
c) -x -y =2
2(3x+y)=-20
⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻
d) 4x+3y =54
⅓x= 4( 1+⅛y)
⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻



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